CVE-2026-106111
ImageSharp: EXR ZIP decoder can expose stale allocator data after a short inflate
- State
- Published
- Severity
- 5.9 Medium
- Published
- Oct 6, 2026
- Updated
- Oct 6, 2026
- Reserved
- Oct 6, 2026
Description
ImageSharp is a 2D graphics library. From 4.0.0 until 4.1.2, ExrBaseDecompressor.UndoZipCompression accepts a nonempty ZIP or ZIPS inflate result that is shorter than the EXR block's required size. ZipExrCompression.Decompress reconstructs the returned prefix while ExrDecoderCore processes the full expected block from a buffer obtained through Configuration.Default, allowing bytes retained from a completed prior ImageSharp operation to appear in decoded pixels. Applications that expose pixels or output from the later attacker-controlled EXR decode can disclose process-local image data. This issue is fixed in version 4.1.2.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | GitHub_M |
Weaknesses
- CWE-226 Sensitive Information in Resource Not Removed Before Reuse
Affected Products
| Product | Versions |
|---|---|
ImageSharpSixLabors |
|
References
- https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-4q3p-rj5x-xv7p
- https://github.com/SixLabors/ImageSharp/pull/3187
- https://github.com/SixLabors/ImageSharp/commit/3c43cf583fdd98eff0f451397affaa31c6a2e6b1
- https://github.com/SixLabors/ImageSharp/commit/6ed2a275217d39301e76df42acec2a9533b39d2b
- https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2
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