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JLSEC-2026-960 Critical 9.8

ImageMagick has Use After Free in MSLStartElement in "coders/msl.c"

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JLSEC Published
Modified
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Packages
ImageMagick_jll < 7.1.2023+0
Upstream
CVE-2026-25983 GHSA-fwqw-2x5x-w566 EUVD-2026-7424

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a crafted MSL script triggers a heap-use-after-free. The operation element handler replaces and frees the image while the parser continues reading from it, leading to a UAF in ReadBlobString during further parsing. Versions 7.1.2-15 and 6.9.13-40 contain a patch.

References