CVE-2026-109276 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 Temporary File Leak in JNG Decoder
Attackers can cause disk space exhaustion and service degradation by submitting crafted JNG files that leak temporary files in ImageMagick.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-109276?
CVE-2026-109276 is a medium-severity denial of service vulnerability in ImageMagick, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 contains an incomplete cleanup flaw in the JNG decoder that fails to remove temporary files when processing crafted input. Attackers can submit crafted JNG files for processing to repeatedly leak temporary files, consuming disk space and degrading availability.
Weakness: CWE-459
Which versions are affected by CVE-2026-109276?
How do I fix CVE-2026-109276?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-109276 being exploited?
There is no known exploitation of CVE-2026-109276 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-109276, ECHO-757a-55db-aa30, GHSA-f983-243h-9x4r, GHSA-hh36-f88v-939q, UBUNTU-CVE-2026-109276.