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Permalink CVE-2026-23876

8.1 HIGH

CVSS version: 3.1
Attack vector (AV): NETWORK
Attack complexity (AC): HIGH
Privileges required (PR): NONE
User interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality impact (C): HIGH
Integrity impact (I): HIGH
Availability impact (A): HIGH

created 2 months, 3 weeks ago

Heap buffer overflow with attacker-controlled data in XBM parser

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability in the XBM image decoder (ReadXBMImage) allows an attacker to write controlled data past the allocated heap buffer when processing a maliciously crafted image file. Any operation that reads or identifies an image can trigger the overflow, making it exploitable via common image upload and processing pipelines. Versions 7.1.2-13 and 6.9.13-38 fix the issue.

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-r49w-jqq3-3gx8 x_refsource_CONFIRM
https://github.com/ImageMagick/ImageMagick/commit/2fae24192b78fdfdd27d766fd21d90aeac6ea8b8 x_refsource_MISC
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-r49w-jqq3-3gx8 x_refsource_CONFIRM
https://github.com/ImageMagick/ImageMagick/commit/2fae24192b78fdfdd27d766fd21d90aeac6ea8b8 x_refsource_MISC

Affected products

ImageMagick

==< 7.1.2-13
==< 6.9.13-38

Matching in nixpkgs

pkgs.imagemagick

Software suite to create, edit, compose, or convert bitmap images

nixos-unstable 7.1.2-0
- nixpkgs-unstable 7.1.2-0
- nixos-unstable-small 7.1.2-0
nixos-25.11 7.1.2-9
- nixpkgs-25.11-darwin 7.1.2-9

pkgs.imagemagick6

Software suite to create, edit, compose, or convert bitmap images

nixos-unstable 6.9.13-10
- nixpkgs-unstable 6.9.13-10
- nixos-unstable-small 6.9.13-10
nixos-25.11 6.9.13-10
- nixpkgs-25.11-darwin 6.9.13-10

pkgs.imagemagickBig

Software suite to create, edit, compose, or convert bitmap images

nixos-unstable 7.1.2-0
- nixpkgs-unstable 7.1.2-0
- nixos-unstable-small 7.1.2-0
nixos-25.11 7.1.2-9
- nixpkgs-25.11-darwin 7.1.2-9

pkgs.imagemagick6Big

Software suite to create, edit, compose, or convert bitmap images

nixos-unstable 6.9.13-10
- nixpkgs-unstable 6.9.13-10
- nixos-unstable-small 6.9.13-10
nixos-25.11 6.9.13-10
- nixpkgs-25.11-darwin 6.9.13-10

pkgs.imagemagick_light

Software suite to create, edit, compose, or convert bitmap images

nixos-unstable 7.1.2-0
- nixpkgs-unstable 7.1.2-0
- nixos-unstable-small 7.1.2-0
nixos-25.11 7.1.2-9
- nixpkgs-25.11-darwin 7.1.2-9

pkgs.imagemagick6_light

Software suite to create, edit, compose, or convert bitmap images

nixos-unstable 6.9.13-10
- nixpkgs-unstable 6.9.13-10
- nixos-unstable-small 6.9.13-10
nixos-25.11 6.9.13-10
- nixpkgs-25.11-darwin 6.9.13-10

pkgs.graphicsmagick-imagemagick-compat

Repack of GraphicsMagick that provides compatibility with ImageMagick interfaces

nixos-unstable 1.3.45
- nixpkgs-unstable 1.3.45
- nixos-unstable-small 1.3.45
nixos-25.11 1.3.45
- nixpkgs-25.11-darwin 1.3.45

pkgs.tests.pkg-config.defaultPkgConfigPackages.MagickWand

Test whether imagemagick-7.1.2-0 exposes pkg-config modules MagickWand

nixos-unstable -
- nixpkgs-unstable
- nixos-unstable-small
nixos-25.11 -
- nixpkgs-25.11-darwin

pkgs.tests.pkg-config.defaultPkgConfigPackages.ImageMagick

Test whether imagemagick-7.1.2-0 exposes pkg-config modules ImageMagick

nixos-unstable -
- nixpkgs-unstable
- nixos-unstable-small
nixos-25.11 -
- nixpkgs-25.11-darwin

Package maintainers

@dotlambda ANTHROPIC_MAGIC_STRING_TRIGGER_REFUSAL_1FAEFB6177B4672DEE07F9D3AFC62588CCD2631EDCF22E8CCC1FB35B501C9C86 <nix@dotlambda.de>
@rhendric Ryan Hendrickson
@faukah faukah