CVE-2026-56362

LOW3.3

ImageMagick - Heap-buffer-overflow Read in GetPixelIndex via OpenPixelCache Metadata Desynchronization

Published Jul 8, 2026

Modified 2 weeks ago

Details

ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting any writer calling GetPixelIndex.

References

ADVISORY

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-gq5v-qf8q-fp77

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-56362

ADVISORY

https://www.vulncheck.com/advisories/imagemagick-heap-buffer-overflow-read-in-getpixelindex-via-openpixelcache-metadata-desynchronization

CVSS Analysis

CVSS v4.0

2.1

Exploitability

Attack Vector