---
id: CVE-2026-106110
title: ImageSharp is a 2D graphics library
summary: >-
  ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, the TIFF CCITT
  Group 3 encoder allocates an undersized compressed-data buffer for narrow
  1-bit images. TiffCcittCompressor.Initialize does not reserve enough space for
  the row …
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-2026-106110'
references:
  - url: >-
      https://github.com/SixLabors/ImageSharp/commit/a9498c6db3642ef92c712ebc81e706914ac16a95
    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-j9gm-c75j-xc9q
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T18:11:36.232Z'
---

## Overview

ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, the TIFF CCITT Group 3 encoder allocates an undersized compressed-data buffer for narrow 1-bit images. TiffCcittCompressor.Initialize does not reserve enough space for the row data and T4 end-of-line codes, and T4BitCompressor.CompressStrip reaches unchecked writes when TiffCompression.CcittGroup3Fax is selected directly or inherited from decoded TIFF metadata. An attacker-controlled encode or decode-and-re-encode flow can write beyond the logical output span, corrupt process memory, and terminate the process. This issue is fixed in version 4.1.2.

## Remediation

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