CVE-2026-106113: Sixlabors Imagesharp

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Sixlabors Imagesharp: from 2.0.0, before 4.1.2 (fixed in 4.1.2)

Published 2026-10-06. Last modified 2026-10-07.