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Description

ImageMagick before 7.1.2-19 contains an out-of-bounds access vulnerability in ConnectedComponentsImage() when processing connected-components artifacts with invalid indices. Attackers can trigger access violations by specifying malformed connected-components definitions via CLI, causing denial of service or potential code execution.

PUBLISHED Reserved 2026-06-21 | Published 2026-06-24 | Updated 2026-06-24 | Assigner VulnCheck




MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Problem types

Out-of-bounds Read

Product status

Default status
unaffected

Any version before 7.1.2-19
affected

7.1.2-19 (semver)
unaffected

Default status
unaffected

Any version before 6.9.13-44
affected

6.9.13-44 (semver)
unaffected

Credits

ylwango613 reporter

References

github.com/...Magick/security/advisories/GHSA-pmpg-6pww-fg6q (GitHub Security Advisory (GHSA-pmpg-6pww-fg6q)) vendor-advisory

www.vulncheck.com/...image-via-connected-components-artifact (VulnCheck Advisory: ImageMagick - Out-of-bounds Access in ConnectedComponentsImage via connected-components Artifact) third-party-advisory

cve.org (CVE-2026-56370)

nvd.nist.gov (CVE-2026-56370)

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