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CVE-2026-33899

ImageMagick: Heap BufferOverflow write of single zero byte when parsing XML

Published: 4/13/2026 Last updated: 4/16/2026 Reserved: 3/24/2026

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-189 and 6.9.13-44, when `Magick` parses an XML file it is possible that a single zero byte is written out of the bounds. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

CNA assigner: GitHub_M (a0819718-46f1-4df5-94e2-005712e83aaa) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 5.3 Medium CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Opam packages affected (2)

conf-libMagickCore ocsigen-start

Products affected (2)

Product Vendor Version
ImageMagick ImageMagick n/a
ImageMagick ImageMagick n/a

References (8)