Use After Free in Imagemagick
CVE-2026-56376
ImageMagick before 7.1.2-15 and 6.9.13-40 contains a heap use-after-free in the meta coder: when memory allocation fails, a single byte is written to a stale pointer. Remote attackers can trigger it by processing specially crafted image files, causing a denial of service.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.003 (22.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Imagemagick — versions 0, 7.1.2-15, 6.9.13-40
Weakness classification (CWE)
References
- github.com/ImageMagick/ImageMagick/security/advisories/GHSA-2gq3-ww97-wfjm (vendor-advisory, Third Party Advisory)
- www.vulncheck.com/advisories/imagemagick-heap-use-after-free-in-meta-coder (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-56376?
- CVE-2026-56376 is a low-severity vulnerability in Imagemagick, classified under Use After Free. CVSS score: 3.7/10. Published 2026-06-23.
- How severe is CVE-2026-56376?
- Low severity. CVSS v3 base score is 3.7 out of 10.