CVE-2026-23876
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.60% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-122, CWE-190, CWE-787
- Affected
- imagemagick/imagemagick
- Source
- security-advisories@github.com
References
- https://github.com/ImageMagick/ImageMagick/commit/2fae24192b78fdfdd27d766fd21d90aeac6ea8b8Patch
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-r49w-jqq3-3gx8Exploit, Vendor 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.