---
id: CVE-2026-106113
title: ImageSharp is a 2D graphics library
summary: >-
  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 ColorNum…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-787
vendor: SixLabors
product: ImageSharp
affected:
  - 'ImageSharp >= 2.0.0, < 4.1.2'
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T20:03:40.690'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106113'
references:
  - url: >-
      https://github.com/SixLabors/ImageSharp/commit/c4c4bf292298c026df470db1a17ff826515fd95d
    label: security-advisories@github.com
  - url: 'https://github.com/SixLabors/ImageSharp/pull/3187'
    label: security-advisories@github.com
  - url: 'https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2'
    label: security-advisories@github.com
  - url: >-
      https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-j3p4-wp97-rph4
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T18:11:36.229Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.