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CVE-2026-56365

ImageMagick - Memory Leak in PNG Encoder via MNG Image Writing

Published: 6/30/2026 Last updated: 7/1/2026 Reserved: 6/20/2026

ImageMagick before 7.1.2-19 contains a memory leak vulnerability in the PNG encoder when writing MNG images. Attackers can trigger the encoder failure condition to exhaust memory resources and cause denial of service.

CNA assigner: VulnCheck (83251b91-4cc7-4094-a5c7-464a1b83ea10) Requested by: n/a

Metrics

Version Score Severity Vector String
4.0 6.3 Medium CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.1 3.7 Low CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Opam packages affected (2)

conf-libMagickCore ocsigen-start

Products affected (4)

Product Vendor Version
ImageMagick ImageMagick < 11.2
ImageMagick ImageMagick n/a
ImageMagick ImageMagick Android-10
ImageMagick ImageMagick 5.7.31 and prior

References (4)

Credits (2)