---
id: CVE-2026-102635
title: >-
  ImageMagick versions before 7.1.2-32 and 6.9.13-57 contain uninitialized heap
  memory disclosure in the GIF decoder's application extension handler in
  coders/gif.c
summary: >-
  ImageMagick versions before 7.1.2-32 and 6.9.13-57 contain uninitialized heap
  memory disclosure in the GIF decoder's application extension handler in
  coders/gif.c. Attackers can craft malicious GIF files that cause the number
  parser to r…
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-908
vendor: ImageMagick
product: ImageMagick
affected:
  - ImageMagick >= 7.0.0-0 < 7.1.2-32
  - ImageMagick < 6.9.13-57
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T17:17:07.323'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102635'
references:
  - url: 'https://github.com/ImageMagick/ImageMagick'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ImageMagick/ImageMagick/blob/7.1.2-31/coders/gif.c#L1168-L1196
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ImageMagick/ImageMagick/commit/a0ca2c739c0216ff4efbd631d1ba7fd54dba1ff4
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-rvv7-5mh8-vcfc
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ImageMagick/ImageMagick6/commit/95dc0fd21a684bfac2bdb6fb6638c0ab271adbe5
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/imagemagick-before-7.1.2-32-and-6.9.13-57-uninitialized-heap-memory-disclosure-in-gif-decoder
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T16:39:33.278Z'
---

## Overview

ImageMagick versions before 7.1.2-32 and 6.9.13-57 contain uninitialized heap memory disclosure in the GIF decoder's application extension handler in coders/gif.c. Attackers can craft malicious GIF files that cause the number parser to read uninitialized heap memory and store contents as image metadata, disclosing sensitive heap information.

## Remediation

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