{"id":"CVE-2025-54575","aliases":["EUVD-2025-23196","GHSA-rxmq-m78w-7wmc"],"status":"published","title":"ImageSharp Triggers an Infinite Loop in its GIF Decoder When Skipping Malformed Comment Extension Blocks","description":"ImageSharp is a 2D graphics library. In versions below 2.1.11 and 3.0.0 through 3.1.10, a specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version. This issue is fixed in versions 2.1.11 and 3.1.11.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00449,"percentile":0.39246,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-770"],"published":"2025-07-30T13:23:01Z","modified":"2026-10-28T02:30:56Z","fixes":[{"ecosystem":"NuGet","package":"SixLabors.ImageSharp","fixed_in":["2.1.11","3.1.11"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"SixLabors.ImageSharp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.11"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"SixLabors.ImageSharp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.1.11"}]}]},{"source":"osv","ecosystem":"NuGet","package":"SixLabors.ImageSharp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.11"}]}],"versions":["1.0.0","1.0.0-beta0001","1.0.0-beta0002","1.0.0-beta0003","1.0.0-beta0004","1.0.0-beta0005","1.0.0-beta0006","1.0.0-beta0007","1.0.0-rc0001","1.0.0-rc0002","1.0.0-rc0003","1.0.1","1.0.2","1.0.3","1.0.4","2.0.0","2.1.0","2.1.1","2.1.10","2.1.2","2.1.3","2.1.4","2.1.5","2.1.6","2.1.7","2.1.8","2.1.9"]},{"source":"osv","ecosystem":"NuGet","package":"SixLabors.ImageSharp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.1.11"}]}],"versions":["3.0.0","3.0.1","3.0.2","3.1.0","3.1.1","3.1.10","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.1.8","3.1.9"]}],"products":[{"vendor":"sixlabors","product":"imagesharp"}],"references":[{"url":"https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-rxmq-m78w-7wmc","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/SixLabors/ImageSharp/issues/2953","tags":["x_refsource_MISC","report","web"]},{"url":"https://github.com/SixLabors/ImageSharp/commit/55e49262df9a057dff9b7807ed1b7bdb49187c3f","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/SixLabors/ImageSharp/commit/833f3ceec35af6b775950e06f03b934546cefbf6","tags":["x_refsource_MISC","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-54575","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rxmq-m78w-7wmc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54575.json","tags":["advisory"]},{"url":"https://github.com/SixLabors/ImageSharp","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-54575","title":"ImageSharp Triggers an Infinite Loop in its GIF Decoder When Skipping Malformed Comment Extension Blocks","description":"ImageSharp is a 2D graphics library. In versions below 2.1.11 and 3.0.0 through 3.1.10, a specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version. This issue is fixed in versions 2.1.11 and 3.1.11.","status":"published","published":"2025-07-30T19:55:16.248Z","modified":"2025-07-30T19:59:35.532Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T14:32:27.28543Z"}],"euvd":[{"id":"EUVD-2025-23196","description":"ImageSharp is a 2D graphics library. In versions below 2.1.11 and 3.0.0 through 3.1.10, a specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version. This issue is fixed in versions 2.1.11 and 3.1.11.","status":"published","published":"2025-07-30T19:55:16Z","modified":"2025-07-30T19:59:35Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T20:32:02.888981Z"}],"ghsa":[{"id":"GHSA-rxmq-m78w-7wmc","title":"SixLabors ImageSharp Has Infinite Loop in GIF Decoder When Skipping Malformed Comment Extension Blocks","description":"### Impact\nA specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version.\n\n### Patches\nThe problem has been patched. All users are advised to upgrade to v3.1.11 or v2.1.11.\n\n### Workarounds\nNone.","status":"published","published":"2025-07-30T13:23:01Z","modified":"2025-07-31T11:18:19Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T14:38:51.864708Z"}],"nvd":[{"id":"CVE-2025-54575","description":"ImageSharp is a 2D graphics library. In versions below 2.1.11 and 3.0.0 through 3.1.10, a specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version. This issue is fixed in versions 2.1.11 and 3.1.11.","status":"published","published":"2025-07-30T20:15:37.207Z","modified":"2026-06-17T09:40:20.293Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T14:11:21.71471Z"}],"osv":[{"id":"CVE-2025-54575","title":"ImageSharp Triggers an Infinite Loop in its GIF Decoder When Skipping Malformed Comment Extension Blocks","description":"ImageSharp is a 2D graphics library. In versions below 2.1.11 and 3.0.0 through 3.1.10, a specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version. This issue is fixed in versions 2.1.11 and 3.1.11.","status":"published","published":"2025-07-30T19:55:16.248Z","modified":"2026-10-28T02:30:56.988542816Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T15:44:50.863921Z"},{"id":"GHSA-rxmq-m78w-7wmc","title":"SixLabors ImageSharp Has Infinite Loop in GIF Decoder When Skipping Malformed Comment Extension Blocks","description":"### Impact\nA specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version.\n\n### Patches\nThe problem has been patched. All users are advised to upgrade to v3.1.11 or v2.1.11.\n\n### Workarounds\nNone.","status":"published","published":"2025-07-30T13:23:01Z","modified":"2025-07-31T11:33:29.786975Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T15:46:56.639206Z"}]}}