CVE-2025-54575 json
ImageSharp Triggers an Infinite Loop in its GIF Decoder When Skipping Malformed Comment Extension Blocks
published 2025-07-30 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-23196 , GHSA-rxmq-m78w-7wmc
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 39%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- nuget SixLabors.ImageSharp 2.1.11, 3.1.11
- sixlabors imagesharp 2.1.11, 3.1.11
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 15 mo ago
Exploit prediction
0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | SixLabors.ImageSharp | <2.1.11 >=3.0.0, <3.1.11 |
2.1.11 3.1.11 |
Affected products
- SixLabors ImageSharp
Classification
References
-
github.com
/SixLabors/ImageSharp/commit/55e49262df9a057dff9b7807ed1b7bdb49187c3f
web
-
github.com
/SixLabors/ImageSharp/commit/833f3ceec35af6b775950e06f03b934546cefbf6
web
-
github.com
/SixLabors/ImageSharp/security/advisories/GHSA-rxmq-m78w-7wmc
web
-
github.com
/SixLabors/ImageSharp/issues/2953
web
-
nvd.nist.gov
/vuln/detail/CVE-2025-54575
advisory
-
github.com
/SixLabors/ImageSharp
package
Sources
- CVE List CVE-2025-54575
- GitHub Advisory GHSA-rxmq-m78w-7wmc
- NVD CVE-2025-54575
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.