CVE-2026-56364 ImageMagick - Memory Leak in LoadOpenCLDeviceBenchmark() via Malformed XML

What is CVE-2026-56364?

CVE-2026-56364 is a low-severity denial of service vulnerability in Imagemagick Imagemagick, published on 30 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

ImageMagick before 7.1.2-13 contains a memory leak vulnerability in LoadOpenCLDeviceBenchmark() function when parsing malformed OpenCL device profile XML files with unclosed device elements. Attackers with write access to the OpenCL cache directory can place malicious XML files to exhaust memory and cause denial of service.

Weakness: CWE-401

Which versions are affected by CVE-2026-56364?

38 open source packages ship an affected version, including Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU and Magick.NET-Q16-HDRI-OpenMP-arm64. It affects 1 product.

Products include Imagemagick Imagemagick.

How do I fix CVE-2026-56364?

Upgrade Magick.NET-Q16-AnyCPU to 14.10.2 or later.

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-2026-56364 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-56364 exists.

Other vulnerabilities in Imagemagick Imagemagick

• CVE-2019-19952 Use after free in n/a Critical 9.8
• CVE-2018-16328 Null dereference in n/a Critical 9.8
• CVE-2018-16329 Null dereference in n/a Critical 9.8
• CVE-2017-18210 Null dereference in n/a Critical 9.8
• CVE-2017-14138 Denial of service in n/a Critical 9.8

All Imagemagick Imagemagick vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-56364, ECHO-56ee-a872-2ea7, GHSA-9gjp-pj3g-87pq, GHSA-qp59-x883-77qv, JLSEC-2026-1045, MINI-4xqq-8j49-f7qw and 1 more.