CVE-2026-33902 ImageMagick: Stack Overflow via Recursive FX Expression Parsing

What is CVE-2026-33902?

CVE-2026-33902 is a medium-severity denial of service vulnerability in Imagemagick Imagemagick, published on 13 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, a stack overflow vulnerability in ImageMagick's FX expression parser allows an attacker to crash the process by providing a deeply nested expression. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

Weakness: CWE-674

Which versions are affected by CVE-2026-33902?

34 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-2026-33902?

Upgrade Magick.NET-Q16-AnyCPU to 14.12.0 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-2026-33902 being exploited?

There is no known exploitation of CVE-2026-33902 in the wild and no public exploit code.

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
• How this page is made

Also known as DEBIAN-CVE-2026-33902, ECHO-9760-303c-bd52, GHSA-f4qm-vj5j-9xpw, JLSEC-2026-996, MINI-m3j8-hhf6-x6vv, UBUNTU-CVE-2026-33902.