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.
CVE-2026-56376
CVSS base score
3.7 (v3.1)
Severity
LOW
Attack vector
Network
Weakness
CWE-416
Last modified
October 29, 2026
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
imagemagick imagemagick
References
- github.com Third Party Advisory
- www.vulncheck.com Third Party Advisory