CVE-2025-54575

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.

Score

CVSS 3.1 5.3 Medium

Status

Deferred - security-advisories@github.com

Published

2025-07-30

Last modified

2025-07-30

Weaknesses

CWE-400, CWE-770

Affected products

• Imagesharp (Sixlabors)

References

• https://github.com/SixLabors/ImageSharp/commit/55e49262df9a057dff9b7807ed1b7bdb49187c3f
• https://github.com/SixLabors/ImageSharp/commit/833f3ceec35af6b775950e06f03b934546cefbf6
• https://github.com/SixLabors/ImageSharp/issues/2953
• https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-rxmq-m78w-7wmc