CVE-2026-106113
ImageSharp: HistogramEqualization uses an unvalidated luminance as an unchecked histogram index
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, decoding an attacker-supplied 32-bit floating-point TIFF as Image<HalfVector4> and applying HistogramEqualization can produce a non-finite or out-of-range luminance in ColorNumerics.GetBT709Luminance. GrayscaleLevelsRowOperation.Invoke uses the resulting value as an unchecked histogram offset, causing an unsafe out-of-range access and process termination. Adaptive Histogram Equalization and AutoLevel are not affected by this report. This issue is fixed in version 4.1.2.
| CWE | CWE-787 |
| Vendor | sixlabors |
| Product | imagesharp |
| Published | Oct 6, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
SixLabors / ImageSharp
>= 2.0.0, < 4.1.2
References
github.com: https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-j3p4-wp97-rph4 github.com: https://github.com/SixLabors/ImageSharp/pull/3187 github.com: https://github.com/SixLabors/ImageSharp/commit/c4c4bf292298c026df470db1a17ff826515fd95d github.com: https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2