CVE-2026-23876

Summary

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability in the XBM image decoder (ReadXBMImage) allows an attacker to write controlled data past the allocated heap buffer when processing a maliciously crafted image file. Any operation that reads or identifies an image can trigger the overflow, making it exploitable via common image upload and processing pipelines. Versions 7.1.2-13 and 6.9.13-38 fix the issue.

Affected Software

Weaknesses

• CWE-122: CWE-122: Heap-based Buffer Overflow
• CWE-190: CWE-190: Integer Overflow or Wraparound

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

ImageMagick: ImageMagick: Arbitrary code execution via a crafted XBM image file

Additional References

• https://access.redhat.com/security/cve/CVE-2026-23876
• https://bugzilla.redhat.com/show_bug.cgi?id=2431038
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23876.json
• https://access.redhat.com/errata/RHSA-2026:3058

References

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-r49w-jqq3-3gx8
• https://github.com/ImageMagick/ImageMagick/commit/2fae24192b78fdfdd27d766fd21d90aeac6ea8b8

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