CVE-2026-86423 ImageMagick before 7.1.2-30 Heap-use-after-free via GetList

What is CVE-2026-86423?

CVE-2026-86423 is a medium-severity use after free vulnerability in Imagemagick Imagemagick, published on 7 Sep 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 before 7.1.2-30 and 6.9.x before 6.9.13-55 contains a heap-use-after-free vulnerability in the GetList method of PerlMagick. A crafted call to the GetList method can trigger the use-after-free, resulting in a crash (denial of service).

Weakness: CWE-416

Which versions are affected by CVE-2026-86423?

It affects 1 product.

Products include Imagemagick Imagemagick.

How do I fix CVE-2026-86423?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-86423 being exploited?

There is no known exploitation of CVE-2026-86423 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
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-86423, ECHO-469c-b2a9-e51b, GHSA-5m9j-96ff-j6qc, GHSA-g684-8gxh-c62w, MINI-4hh9-p85v-wwgg, UBUNTU-CVE-2026-86423.