CVE-2026-93590 ImageMagick before 7.1.2-31 Policy Bypass in UHDR encoder
Attackers can cause denial of service via excessive memory allocation by bypassing resource policies in the UHDR encoder.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-93590?
CVE-2026-93590 is a medium-severity denial of service vulnerability in Imagemagick Imagemagick, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ImageMagick before 7.1.2-31 contains a policy bypass vulnerability in the UHDR encoder that fails to perform policy checks during buffer allocation for image pixels. Attackers can bypass resource policies by processing specially crafted UHDR images, potentially causing denial of service through excessive memory allocation.
Weakness: CWE-400
Which versions are affected by CVE-2026-93590?
It affects 1 product.
Products include Imagemagick Imagemagick.
How do I fix CVE-2026-93590?
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-2026-93590 being exploited?
There is no known exploitation of CVE-2026-93590 in the wild and no public exploit code.
Other vulnerabilities in Imagemagick Imagemagick
Sources
Also known as DEBIAN-CVE-2026-93590, ECHO-8fab-ae2f-a9ed, GHSA-738c-v4gv-hcp2, GHSA-7hjx-392p-f8cm, MINI-3v72-7hm8-87gp, OESA-2026-4198 and 4 more.