Vulnerability in Imagemagick
CVE-2026-123273
ImageMagick before 7.1.2-35 and 6.9.13-60 contains an infinite loop vulnerability in the SVG decoder because QueueAuthenticPixelCacheNexus in MagickCore/cache.c fails to validate requested region width and height. Attackers can supply a crafted SVG image that repeatedly requests a non-advancing pixel region, consuming CPU and hanging the decoding worker.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/ImageMagick/ImageMagick/blob/3a9639c0bd21f61f22fcce4c5f6838f1f0d8f73… (technical-description)
- github.com/ImageMagick/ImageMagick/commit/c5f2c6c9fb1458f960a506691c9351e9da6d2… (patch)
- ImageMagick 7.1.2-35 Release Notes (release-notes)
- GitHub Security Advisory (GHSA-q66g-3m63-78mh) (vendor-advisory)
- github.com/ImageMagick/ImageMagick6/commit/712e523e7f746d35c963b78555e1c24364a9… (patch)
- ImageMagick 6.9.13-60 Release Notes (release-notes)
- VulnCheck Advisory: ImageMagick before 7.1.2-35 and 6.9.13-60 Infinite Loop via SVG Decoder (third-party-advisory)
Frequently asked questions
- What is CVE-2026-123273?
- CVE-2026-123273 is a medium-severity vulnerability in Imagemagick, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2026-11-05.
- How severe is CVE-2026-123273?
- Medium severity. CVSS v3 base score is 6.5 out of 10.