CVE-2026-46559: ImageMagick: Heap Buffer Over-Write of a single byte in the JP2 encoder.

May 18, 2026 (updated June 11, 2026)

An incorrect check in the JP2 will result in an heap buffer over-write of a single byte when specifying certain options.

References

github.com/ImageMagick/ImageMagick/security/advisories/GHSA-533m-3wf6-c33v
github.com/advisories/GHSA-533m-3wf6-c33v
nvd.nist.gov/vuln/detail/CVE-2026-46559

Code Behaviors & Features

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