---
id: CVE-2026-105826
title: >-
  ImageMagick before 6.9.13-55 and 7.x before 7.1.2-30 contains a security
  policy bypass in the MAT decoder, which does not enforce configured temporary
  file size limits when reading highly compressed data
summary: >-
  ImageMagick before 6.9.13-55 and 7.x before 7.1.2-30 contains a security
  policy bypass in the MAT decoder, which does not enforce configured temporary
  file size limits when reading highly compressed data. Attackers can supply a
  crafted M…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-409
vendor: ImageMagick
product: ImageMagick
affected:
  - ImageMagick < 7.1.2-30
  - ImageMagick < 6.9.13-55
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T20:50:49.260'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105826'
references:
  - url: >-
      https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-3j4w-pvxj-fpjc
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/imagemagick-before-7.1.2-30-security-policy-bypass-via-mat-decoder
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-08T15:36:46.777798Z'
ingestedAt: '2026-10-08T14:47:16.362Z'
---

## Overview

ImageMagick before 6.9.13-55 and 7.x before 7.1.2-30 contains a security policy bypass in the MAT decoder, which does not enforce configured temporary file size limits when reading highly compressed data. Attackers can supply a crafted MAT image whose decompressed data is written to temporary files larger than the policy allows, consuming disk resources.

## Remediation

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