Heap Use-After-Free Vulnerability in ImageMagick by ImageMagick, Inc.
CVE-2026-56376

6.3MEDIUM

Key Information:

Vendor

Imagemagick
Status
Imagemagick
Vendor
CVE Published:
23 June 2026

What is CVE-2026-56376?

ImageMagick versions prior to 7.1.2-15 and 6.9.13-40 are susceptible to a heap use-after-free vulnerability within the meta coder component. This occurs when memory allocation fails and a byte is incorrectly written to a stale pointer. By submitting specially crafted image files, remote attackers can exploit this flaw, potentially leading to denial of service conditions.

Affected Version(s)

ImageMagick 0 < 7.1.2-15

ImageMagick 0 < 6.9.13-40

ImageMagick 7.1.2-15

References

https://github.com/ImageMagick/ImageMagick/security/advis...
vendor-advisory
https://www.vulncheck.com/advisories/imagemagick-heap-use...
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

ylwango613
.