{"id":"CVE-2026-48155","aliases":["CLSA-2026-1783386116","DEBIAN-CVE-2026-48155","EUVD-2026-32914","GHSA-cj93-chg6-vgv8","GHSA-jm82-fx9c-mx94","MGASA-2026-0577","PYSEC-2026-3016","ROOT-APP-PYPI-CVE-2026-48155","ROOT-APP-PYPI-GHSA-jm82-fx9c-mx94","UBUNTU-CVE-2026-48155","openSUSE-SU-2026:10974-1"],"status":"published","title":"pypdf: Possible large memory usage for large offsets for layout mode text","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.","severity":{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00127,"percentile":0.024,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-770"],"published":"2026-05-28T14:51:49Z","modified":"2026-11-05T05:15:03Z","fixes":[{"ecosystem":"PyPI","package":"pypdf","fixed_in":["6.12.0","6.13.3"],"sources":["ghsa","osv"]},{"ecosystem":"TuxCare:PyPI","package":"pypdf","fixed_in":["5.9.0.post9+tuxcare"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"pypdf","fixed_in":["6.19.0-1"],"sources":["osv"]},{"ecosystem":"Root:PyPI","package":"pypdf","fixed_in":["6.10.1+aikido.4","6.10.1+aikido.5","6.10.2+aikido.1","6.6.0+aikido.11","6.11.0+aikido.1","6.11.0+aikido.2","6.6.0+aikido.12","6.10.2+aikido.2","6.10.1+aikido.6","6.10.1+aikido.7","6.10.2+aikido.3","6.11.0+aikido.3","6.6.0+aikido.13","6.11.0+aikido.4","6.6.0+aikido.14","6.10.2+aikido.4","6.10.1+aikido.8","6.10.1+aikido.9","6.6.0+aikido.15","6.10.1+aikido.10","6.11.0+aikido.5","6.10.2+aikido.5","6.6.0+aikido.10","6.12.0+aikido.1","6.12.1+aikido.1","6.12.2+aikido.1","6.13.2+aikido.1","6.12.1+aikido.2","6.12.1+aikido.3","6.12.0+aikido.2","6.13.2+aikido.2","6.12.0+aikido.3","6.12.2+aikido.2","6.12.1+aikido.4","6.12.0+aikido.4","6.12.2+aikido.3","6.13.2+aikido.3","6.13.2+aikido.4","6.12.0+aikido.5","6.12.2+aikido.4","6.12.0+aikido.6","6.12.1+aikido.5","6.12.2+aikido.5"],"sources":["osv"]},{"ecosystem":"Root:PyPI","package":"rootio-pypdf","fixed_in":["6.10.1+root.io.4","6.10.1+root.io.5","6.10.2+root.io.1","6.6.0+root.io.11","6.11.0+root.io.1","6.11.0+root.io.2","6.6.0+root.io.10","6.12.0+root.io.1","6.12.1+root.io.1","6.12.2+root.io.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"pypdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.0"}]}]},{"source":"ghsa","ecosystem":"PyPI","package":"pypdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.13.3"}]}]},{"source":"osv","ecosystem":"TuxCare:PyPI","package":"pypdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.9.0"},{"fixed":"5.9.0.post9+tuxcare"}]}],"versions":["5.9.0","5.9.0.post1+tuxcare","5.9.0.post2+tuxcare","5.9.0.post3+tuxcare","5.9.0.post4+tuxcare","5.9.0.post5+tuxcare","5.9.0.post6+tuxcare","5.9.0.post7+tuxcare","5.9.0.post8+tuxcare"]},{"source":"osv","ecosystem":"Debian:12","package":"pypdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.17.4-1","3.4.1-1","3.4.1-1+deb12u1","4.0.0-1","4.0.0-1~exp1","4.0.1-1","4.0.2-1","4.1.0-1","4.2.0-1","4.3.1-1","5.4.0-1","6.19.0-1","6.21.0-1","6.21.1-1","6.21.4-1","6.9.0-1","6.9.2-1","6.9.2-2"]},{"source":"osv","ecosystem":"Debian:13","package":"pypdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-1","6.19.0-1","6.21.0-1","6.21.1-1","6.21.4-1","6.9.0-1","6.9.2-1","6.9.2-2"]},{"source":"osv","ecosystem":"Debian:14","package":"pypdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.19.0-1"}]}],"versions":["5.4.0-1","6.9.0-1","6.9.2-1","6.9.2-2"]},{"source":"osv","ecosystem":"Debian:12","package":"pypdf2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.1-3","2.12.1-3+deb12u1","2.12.1-4"]},{"source":"osv","ecosystem":"PyPI","package":"pypdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.0"}]}],"versions":["1.0","1.1","1.10","1.11","1.12","1.13","1.2","1.3","1.4","1.5","1.6","1.7","1.8","1.9","3.1.0","3.10.0","3.11.0","3.11.1","3.12.0","3.12.1","3.12.2","3.13.0","3.14.0","3.15.0","3.15.1","3.15.2","3.15.3","3.15.4","3.15.5","3.16.0","3.16.1","3.16.2","3.16.3","3.16.4","3.17.0","3.17.1","3.17.2","3.17.3","3.17.4","3.2.0","3.2.1","3.3.0","3.4.0","3.4.1","3.5.0","3.5.1","3.5.2","3.6.0","3.7.0","3.7.1","3.8.0","3.8.1","3.9.0","3.9.1","4.0.0","4.0.1","4.0.2","4.1.0","4.2.0","4.3.0","4.3.1","5.0.0","5.0.1","5.1.0","5.2.0","5.3.0","5.3.1","5.4.0","5.5.0","5.6.0","5.6.1","5.7.0","5.8.0","5.9.0","6.0.0","6.1.0","6.1.1","6.1.2","6.1.3","6.10.0","6.10.1","6.10.2","6.11.0","6.2.0","6.3.0","6.4.0","6.4.1","6.4.2","6.5.0","6.6.0","6.6.1","6.6.2","6.7.0","6.7.1","6.7.2","6.7.3","6.7.4","6.7.5","6.8.0","6.9.0","6.9.1","6.9.2"]},{"source":"osv","ecosystem":"PyPI","package":"pypdf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.13.3"}]}],"versions":["1.0","1.1","1.10","1.11","1.12","1.13","1.2","1.3","1.4","1.5","1.6","1.7","1.8","1.9","3.1.0","3.10.0","3.11.0","3.11.1","3.12.0","3.12.1","3.12.2","3.13.0","3.14.0","3.15.0","3.15.1","3.15.2","3.15.3","3.15.4","3.15.5","3.16.0","3.16.1","3.16.2","3.16.3","3.16.4","3.17.0","3.17.1","3.17.2","3.17.3","3.17.4","3.2.0","3.2.1","3.3.0","3.4.0","3.4.1","3.5.0","3.5.1","3.5.2","3.6.0","3.7.0","3.7.1","3.8.0","3.8.1","3.9.0","3.9.1","4.0.0","4.0.1","4.0.2","4.1.0"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Advisory","advisory","web","report"]},{"url":"https://github.com/py-pdf/pypdf/pull/3790","tags":["x_refsource_MISC","Issue Tracking","Patch","fix","web","report"]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.12.0","tags":["x_refsource_MISC","Release Notes","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48155","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cj93-chg6-vgv8","tags":["advisory"]},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-jm82-fx9c-mx94","tags":["web"]},{"url":"https://github.com/py-pdf/pypdf/pull/3871","tags":["web"]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.13.3","tags":["web"]},{"url":"https://github.com/advisories/GHSA-jm82-fx9c-mx94"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48155.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-48155","tags":["advisory"]},{"url":"https://github.com/py-pdf/pypdf","tags":["package"]},{"url":"https://advisories.mageia.org/MGASA-2026-0577.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35672","tags":["report"]},{"url":"https://pypi.org/project/pypdf","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-48155","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-48155","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-48155","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-48735","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-48155","title":"pypdf: Possible large memory usage for large offsets for layout mode text","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.","status":"published","published":"2026-05-28T14:51:49.411Z","modified":"2026-05-28T15:57:54.367Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T13:50:49.872037Z"}],"euvd":[{"id":"EUVD-2026-32914","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.","status":"published","published":"2026-05-28T14:51:49Z","modified":"2026-05-28T15:57:54Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:21:02.186346Z"}],"ghsa":[{"id":"GHSA-cj93-chg6-vgv8","title":"pypdf: Possible large memory usage for large offsets for layout mode text","description":"### Impact\n\nAn attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets.\n\n### Patches\n\nThis has been fixed in [pypdf==6.12.0](https://github.com/py-pdf/pypdf/releases/tag/6.12.0).\n\n### Workarounds\n\nIf developers are unable to immediately upgrade, they should consider applying the changes from PR [#3790](https://github.com/py-pdf/pypdf/pull/3790).","status":"published","published":"2026-06-12T18:29:15Z","modified":"2026-06-12T18:29:16Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:40:26.12116Z"},{"id":"GHSA-jm82-fx9c-mx94","title":"pypdf: Missing stream length values ignore defined limits","description":"### Impact\n\nAn attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as `MAX_DECLARED_STREAM_LENGTH` is sometimes ignored. This requires parsing a content stream without a `/Length` value.\n\n### Patches\nThis has been fixed in [pypdf==6.13.3](https://github.com/py-pdf/pypdf/releases/tag/6.13.3).\n\n### Workarounds\nIf you cannot upgrade yet, consider applying the changes from PR [#3871](https://github.com/py-pdf/pypdf/pull/3871).","status":"published","published":"2026-06-18T14:28:49Z","modified":"2026-06-18T14:28:51Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T14:40:29.43528Z"}],"nvd":[{"id":"CVE-2026-48155","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.","status":"published","published":"2026-05-28T16:16:28.89Z","modified":"2026-11-02T16:06:04.477Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T20:51:36.746158Z"}],"osv":[{"id":"CVE-2026-48155","title":"pypdf: Possible large memory usage for large offsets for layout mode text","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.","status":"published","published":"2026-05-28T14:51:49.411Z","modified":"2026-11-04T02:47:36.673182064Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-04T02:53:45.692342Z"},{"id":"DEBIAN-CVE-2026-48155","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.","status":"published","published":"2026-05-28T16:16:28.89Z","modified":"2026-11-03T10:00:19.071505837Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T10:27:58.933618Z"},{"id":"GHSA-cj93-chg6-vgv8","title":"pypdf: Possible large memory usage for large offsets for layout mode text","description":"### Impact\n\nAn attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets.\n\n### Patches\n\nThis has been fixed in [pypdf==6.12.0](https://github.com/py-pdf/pypdf/releases/tag/6.12.0).\n\n### Workarounds\n\nIf developers are unable to immediately upgrade, they should consider applying the changes from PR [#3790](https://github.com/py-pdf/pypdf/pull/3790).","status":"published","published":"2026-06-12T18:29:15Z","modified":"2026-09-10T03:51:08.468487559Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:45.28161Z"},{"id":"GHSA-jm82-fx9c-mx94","title":"pypdf: Missing stream length values ignore defined limits","description":"### Impact\n\nAn attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as `MAX_DECLARED_STREAM_LENGTH` is sometimes ignored. This requires parsing a content stream without a `/Length` value.\n\n### Patches\nThis has been fixed in [pypdf==6.13.3](https://github.com/py-pdf/pypdf/releases/tag/6.13.3).\n\n### Workarounds\nIf you cannot upgrade yet, consider applying the changes from PR [#3871](https://github.com/py-pdf/pypdf/pull/3871).","status":"published","published":"2026-06-18T14:28:49Z","modified":"2026-09-10T03:51:08.790625588Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T15:46:50.687609Z"},{"id":"PYSEC-2026-3016","title":"pypdf: Possible large memory usage for large offsets for layout mode text","description":"### Impact\n\nAn attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets.\n\n### Patches\n\nThis has been fixed in [pypdf==6.12.0](https://github.com/py-pdf/pypdf/releases/tag/6.12.0).\n\n### Workarounds\n\nIf developers are unable to immediately upgrade, they should consider applying the changes from PR [#3790](https://github.com/py-pdf/pypdf/pull/3790).","status":"published","published":"2026-07-13T15:46:16.929812Z","modified":"2026-07-13T16:33:09.978909533Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T15:52:56.429374Z"},{"id":"UBUNTU-CVE-2026-48155","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.","status":"published","published":"2026-05-28T16:16:00Z","modified":"2026-10-17T13:00:23.012444648Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:56:33.391918Z"},{"id":"CLSA-2026-1783386116","title":"TuxCare security update for pypdf (2 CVEs)","description":"TuxCare rebuilt pypdf to address 2 CVEs. Fixed in 5.9.0.post9+tuxcare.","status":"published","published":"2026-08-04T14:52:42Z","modified":"2026-10-15T09:48:05.270458313Z","updated_at":"2026-11-02T15:43:45.794021Z"},{"id":"MGASA-2026-0577","title":"Updated python-pypdf package fixes security vulnerabilities","description":"This new version fixes several security vulnerabilities.\n","status":"published","published":"2026-11-05T05:11:54Z","modified":"2026-11-05T05:15:03.023299214Z","updated_at":"2026-11-05T07:10:31.343344Z"},{"id":"openSUSE-SU-2026:10974-1","title":"python311-pypdf-6.13.0-1.1 on GA media","description":"These are all security issues fixed in the python311-pypdf-6.13.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-06-08T00:00:00Z","modified":"2026-06-09T09:00:06.497639198Z","updated_at":"2026-11-02T16:58:38.95195Z"},{"id":"ROOT-APP-PYPI-CVE-2026-48155","title":"CVE-2026-48155 in pypdf - Patched by Root","description":"Root has patched CVE-2026-48155 in the pypdf package for Root:PyPI. Multiple fixed versions available.","status":"published","published":"2026-08-17T09:27:33Z","modified":"2026-08-17T11:00:06.10662865Z","updated_at":"2026-11-02T15:53:28.259095Z"},{"id":"ROOT-APP-PYPI-GHSA-jm82-fx9c-mx94","title":"GHSA-jm82-fx9c-mx94 in pypdf - Patched by Root","description":"Root has patched GHSA-jm82-fx9c-mx94 in the pypdf package for Root:PyPI. Multiple fixed versions available.","status":"published","published":"2026-08-17T09:27:33Z","modified":"2026-08-17T11:00:11.361776601Z","updated_at":"2026-11-02T15:53:28.259095Z"}]}}