Vulnerability · Published Oct 6, 2026 · Assigned by GitHub_M
CVE-2026-106112ImageSharp: ICC LUT16 output channel count can write beyond Vector4
High 7.5
In plain English
A high-severity out-of-bounds write in ImageSharp from SixLabors. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
ImageSharp is a 2D graphics library. From 4.0.0 until 4.1.2, ICC LUT16 conversion accepts more than four output channels even though ClutCalculator.Calculate and LutEntryCalculator.CalculateLut store intermediate and output values in Vector4. When DecoderOptions.ColorProfileHandling is set to Convert, a malformed embedded profile can direct interpolation and output-LUT operations to write one float per declared channel beyond the four-float destination. This can corrupt memory and terminate the process; the default Preserve mode does not run ICC conversion. This issue is fixed in version 4.1.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | sixlabors.imagesharp | 4.1.2 | GHSA-ffp7-56pq-64mr |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| SixLabors | ImageSharp | >= 4.0.0, < 4.1.2 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-ffp7-56pq-64mr x_refsource_CONFIRM
- https://github.com/SixLabors/ImageSharp/pull/3187 x_refsource_MISC
- https://github.com/SixLabors/ImageSharp/commit/b03f0ed7e5be760eecc740fa53dd166b18ae9b23 x_refsource_MISC
- https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2 x_refsource_MISC