What’s Vulnerable › Vulnerabilities

CVE-2026-56376: ImageMagick - Heap Use-After-Free in Meta Coder

• Severity: low (CVSS 3.3 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: 2026-06-23 · updated 2026-10-29
• Weakness: CWE-416

Description

ImageMagick before 7.1.2-15 and 6.9.13-40 contains a heap use-after-free in the meta coder: when memory allocation fails, a single byte is written to a stale pointer. Remote attackers can trigger it by processing specially crafted image files, causing a denial of service.

Affected products

• ImageMagick: before 6.9.13-40; from 7.0.0-0 before 7.1.2-15 — fixed in 6.9.13-40, 7.1.2-15
• ImageMagick: from 7.0.0 before 7.1.2-15 — fixed in 7.1.2-15

How to fix

Upgrade to a fixed version: ImageMagick 6.9.13-40, 7.1.2-15; ImageMagick 7.1.2-15. Check the vendor advisory for mitigations.

References

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-2gq3-ww97-wfjm
• https://www.vulncheck.com/advisories/imagemagick-heap-use-after-free-in-meta-coder

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