CVE-2026-23876: high-severity vulnerability in ImageMagick
Heap buffer overflow with attacker-controlled data in XBM parser
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 0.7%
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:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
ImageMagick · ImageMagickRelated CVEs — ImageMagick
In the same product, most dangerous first.
CVE-2025-55298HIGHImageMagick Format String Bug in InterpretImageFilename leads to arbitrary code executionEPSS 4.7%CVE-2016-7523—CVE-2016-7523EPSS 2.7%CVE-2016-7524—CVE-2016-7524EPSS 2.2%CVE-2026-46522HIGHImageMagick: Infinite Loop in the MIFF decoder can lead to CPU exhaustionEPSS 1.8%CVE-2026-56379CRITICALImageMagick - Command Injection via SVG DecoderEPSS 1.6%CVE-2019-10131MEDIUMCVE-2019-10131EPSS 1.3%
References
https://access.redhat.com/errata/RHSA-2026:3058https://access.redhat.com/security/cve/CVE-2026-23876https://bugzilla.redhat.com/show_bug.cgi?id=2431038https://github.com/ImageMagick/ImageMagick/commit/2fae24192b78fdfdd27d766fd21d90aeac6ea8b8https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-r49w-jqq3-3gx8https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23876.json