CVE-2026-56362

low

Description

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

Advisories

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

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

Details

Source: Mitre, NVD

Published: 2026-07-08

Updated: 2026-07-09

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:C

Severity: High

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High

CVSS v4

Base Score: 2.1

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

Severity: Low

EPSS

EPSS: 0.00195