GHSA-pmpg-6pww-fg6q: ImageMagick has out-of-bounds access in ConnectedComponentsImage() via CLI-controlled connected-components:* artifacts

April 14, 2026 (updated September 18, 2026)

When the connected-components:* define specifies an invalid index and out of bound operation will result in an access violation.

References

github.com/ImageMagick/ImageMagick/security/advisories/GHSA-pmpg-6pww-fg6q
github.com/advisories/GHSA-pmpg-6pww-fg6q
nvd.nist.gov/vuln/detail/CVE-2026-56370
www.vulncheck.com/advisories/imagemagick-out-of-bounds-access-in-connectedcomponentsimage-via-connected-components-artifact

Code Behaviors & Features

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