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Vulnerability record · CVE-2026-23876 · published 20 January 2026

CVE-2026-23876: Imagemagick heap-based buffer overflow vulnerability

Imagemagick · Imagemagick

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.

9.8 CVSS 3.1 Critical EPSS 0.66% · top 50.3% CWE-122 · Heap-based buffer overflowCWE-190 · Integer overflow
9.8CVSS 3.1 base score
0.66%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 1 tagged exploit
15 Jul 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/ImageMagick/ImageMagick/commit/2fae24192b78fdfdd27d766fd21d90aeac6ea8b8 Patch
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-r49w-jqq3-3gx8 ExploitVendor Advisory
https://access.redhat.com/errata/RHSA-2026:3058
https://access.redhat.com/security/cve/CVE-2026-23876
https://bugzilla.redhat.com/show_bug.cgi?id=2431038
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23876.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-23876), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.