CVE-2026-46523: ImageMagick: Use-After-Free in MSL decoder.

Severity: medium (CVSS 6.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-10 · updated 2026-07-23
Weakness: CWE-416

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2.23 and 6.9.13-48, a crafted MSL image can trigger a heap-use-after-free. Versions 7.1.2.23 and 6.9.13-48 fix the issue.

Affected products

ImageMagick: before 6.9.13-48; from 7.0.0-0 before 7.1.2-23 — fixed in 6.9.13-48, 7.1.2-23

How to fix

Upgrade to a fixed version: ImageMagick 6.9.13-48, 7.1.2-23. Check the vendor advisory for mitigations.

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-5r4x-w6p5-222q
https://access.redhat.com/errata/RHSA-2026:32961
https://access.redhat.com/security/cve/CVE-2026-46523
https://bugzilla.redhat.com/show_bug.cgi?id=2487743
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46523.json

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