CVE-2026-62946: ImageMagick: Integer Overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds

July 24, 2026

When processing an extremely large JNX file on 32-bit platforms an integer overflow will happen that can cause a heap buffer over-write.

References

github.com/ImageMagick/ImageMagick/security/advisories/GHSA-h22j-f9xw-xjjm
github.com/advisories/GHSA-h22j-f9xw-xjjm
github.com/dlemstra/Magick.NET/releases/tag/14.15.0
nvd.nist.gov/vuln/detail/CVE-2026-62946

Code Behaviors & Features

Detect and mitigate CVE-2026-62946 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 →