CVE-2026-28686: ImageMagick: Write heap-buffer-overflow in PCL encoder via undersized output buffer

March 12, 2026

A heap-buffer-overflow vulnerability exists in the PCL encode due to an undersized output buffer allocation.

WRITE of size 1 at 0x7e79f91f31a0 thread T0

References

github.com/ImageMagick/ImageMagick
github.com/ImageMagick/ImageMagick/security/advisories/GHSA-467j-76j7-5885
github.com/advisories/GHSA-467j-76j7-5885
github.com/dlemstra/Magick.NET/releases/tag/14.10.4
nvd.nist.gov/vuln/detail/CVE-2026-28686

Code Behaviors & Features

Detect and mitigate CVE-2026-28686 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →