CVE-2026-23876

critical

Description

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://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23876.json

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-r49w-jqq3-3gx8

https://github.com/ImageMagick/ImageMagick/commit/2fae24192b78fdfdd27d766fd21d90aeac6ea8b8

https://bugzilla.redhat.com/show_bug.cgi?id=2431038

https://access.redhat.com/security/cve/CVE-2026-23876

https://access.redhat.com/errata/RHSA-2026:3058

Details

Source: Mitre, NVD

Published: 2026-01-20

Updated: 2026-06-30

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00043