{"id":"CVE-2026-58496","aliases":["DEBIAN-CVE-2026-58496","EUVD-2026-111405","GHSA-crfw-c34f-vqrj","UBUNTU-CVE-2026-58496"],"status":"published","title":"ThorVG: Out-of-bounds Read in SFNT/TTF Font Loader via Memory API","description":"Thor Vector Graphics (ThorVG) is a production-ready vector graphics engine. Prior to 1.0.7, the `SFNT/TTF` font loader's `SfntLoader::gen` function in `tvgSfntLoader.cpp` reads `data[0] through data[3]` to identify the font type without first checking that the input buffer contains at least four bytes. Loading an undersized font directly from memory through public APIs such as `tvg::Text::load` causes an out-of-bounds read. Loading through a file path using `mmap` can mask the read because of page alignment; the memory-loading API directly exposes it. Depending on memory layout, a malformed short font may crash the consuming application or disclose adjacent heap memory. This issue is fixed in version 1.0.7.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00211,"percentile":0.11401,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-27T22:18:34Z","modified":"2026-11-04T02:47:47Z","affected":[{"source":"osv","ecosystem":"Debian:14","package":"thorvg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.2+dfsg-1","1.0.3+dfsg-1","1.0.3+dfsg-2","1.0.3+dfsg-3","1.0.3+dfsg2-1","1.0.3+dfsg2-2","1.0.3+dfsg2-3","1.0.3+dfsg2-4","1.0.6+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"thorvg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.3+dfsg2-4","1.0.6+dfsg-1"]}],"products":[{"vendor":"thorvg","product":"thorvg"}],"references":[{"url":"https://github.com/thorvg/thorvg/security/advisories/GHSA-crfw-c34f-vqrj","tags":["x_refsource_CONFIRM","exploit","advisory","report"]},{"url":"https://github.com/thorvg/thorvg/commit/1dc232a33535946b5eed5fd65e993b13226da0ca","tags":["x_refsource_MISC","fix","report"]},{"url":"https://github.com/thorvg/thorvg/releases/tag/v1.0.7","tags":["x_refsource_MISC","web","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58496.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58496","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-58496","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-58496","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-58496","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-58496","title":"ThorVG: Out-of-bounds Read in SFNT/TTF Font Loader via Memory API","description":"Thor Vector Graphics (ThorVG) is a production-ready vector graphics engine. Prior to 1.0.7, the `SFNT/TTF` font loader's `SfntLoader::gen` function in `tvgSfntLoader.cpp` reads `data[0] through data[3]` to identify the font type without first checking that the input buffer contains at least four bytes. Loading an undersized font directly from memory through public APIs such as `tvg::Text::load` causes an out-of-bounds read. Loading through a file path using `mmap` can mask the read because of page alignment; the memory-loading API directly exposes it. Depending on memory layout, a malformed short font may crash the consuming application or disclose adjacent heap memory. This issue is fixed in version 1.0.7.","status":"published","published":"2026-10-27T22:18:34.301Z","modified":"2026-11-02T19:46:26.453Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T20:51:25.833244Z"}],"euvd":[{"id":"EUVD-2026-111405","description":"Thor Vector Graphics (ThorVG) is a production-ready vector graphics engine. Prior to 1.0.7, the `SFNT/TTF` font loader's `SfntLoader::gen` function in `tvgSfntLoader.cpp` reads `data[0] through data[3]` to identify the font type without first checking that the input buffer contains at least four bytes. Loading an undersized font directly from memory through public APIs such as `tvg::Text::load` causes an out-of-bounds read. Loading through a file path using `mmap` can mask the read because of page alignment; the memory-loading API directly exposes it. Depending on memory layout, a malformed short font may crash the consuming application or disclose adjacent heap memory. This issue is fixed in version 1.0.7.","status":"published","published":"2026-10-27T22:18:34Z","modified":"2026-11-02T19:46:26Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T05:08:37.762119Z"}],"nvd":[{"id":"CVE-2026-58496","description":"Thor Vector Graphics (ThorVG) is a production-ready vector graphics engine. Prior to 1.0.7, the `SFNT/TTF` font loader's `SfntLoader::gen` function in `tvgSfntLoader.cpp` reads `data[0] through data[3]` to identify the font type without first checking that the input buffer contains at least four bytes. Loading an undersized font directly from memory through public APIs such as `tvg::Text::load` causes an out-of-bounds read. Loading through a file path using `mmap` can mask the read because of page alignment; the memory-loading API directly exposes it. Depending on memory layout, a malformed short font may crash the consuming application or disclose adjacent heap memory. This issue is fixed in version 1.0.7.","status":"published","published":"2026-10-27T23:17:06.42Z","modified":"2026-11-02T20:17:46.827Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-03T00:02:37.938656Z"}],"osv":[{"id":"CVE-2026-58496","title":"ThorVG: Out-of-bounds Read in SFNT/TTF Font Loader via Memory API","description":"Thor Vector Graphics (ThorVG) is a production-ready vector graphics engine. Prior to 1.0.7, the `SFNT/TTF` font loader's `SfntLoader::gen` function in `tvgSfntLoader.cpp` reads `data[0] through data[3]` to identify the font type without first checking that the input buffer contains at least four bytes. Loading an undersized font directly from memory through public APIs such as `tvg::Text::load` causes an out-of-bounds read. Loading through a file path using `mmap` can mask the read because of page alignment; the memory-loading API directly exposes it. Depending on memory layout, a malformed short font may crash the consuming application or disclose adjacent heap memory. This issue is fixed in version 1.0.7.","status":"published","published":"2026-10-27T22:18:34.301Z","modified":"2026-11-04T07:13:46.33173569Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-04T07:32:23.735279Z"},{"id":"DEBIAN-CVE-2026-58496","description":"Thor Vector Graphics (ThorVG) is a production-ready vector graphics engine. Prior to 1.0.7, the `SFNT/TTF` font loader's `SfntLoader::gen` function in `tvgSfntLoader.cpp` reads `data[0] through data[3]` to identify the font type without first checking that the input buffer contains at least four bytes. Loading an undersized font directly from memory through public APIs such as `tvg::Text::load` causes an out-of-bounds read. Loading through a file path using `mmap` can mask the read because of page alignment; the memory-loading API directly exposes it. Depending on memory layout, a malformed short font may crash the consuming application or disclose adjacent heap memory. This issue is fixed in version 1.0.7.","status":"published","published":"2026-10-27T23:17:06.42Z","modified":"2026-11-03T09:47:33.615205395Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T10:27:58.933618Z"},{"id":"UBUNTU-CVE-2026-58496","description":"Thor Vector Graphics (ThorVG) is a production-ready vector graphics engine. Prior to 1.0.7, the `SFNT/TTF` font loader's `SfntLoader::gen` function in `tvgSfntLoader.cpp` reads `data[0] through data[3]` to identify the font type without first checking that the input buffer contains at least four bytes. Loading an undersized font directly from memory through public APIs such as `tvg::Text::load` causes an out-of-bounds read. Loading through a file path using `mmap` can mask the read because of page alignment; the memory-loading API directly exposes it. Depending on memory layout, a malformed short font may crash the consuming application or disclose adjacent heap memory. This issue is fixed in version 1.0.7.","status":"published","published":"2026-10-27T23:17:00Z","modified":"2026-10-28T20:17:47.811784133Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T16:56:41.911783Z"}]}}