CVE-2026-49218 ImageMagick: Policy Bypass in DCM decoder could result in image with invalid dimensions

What is CVE-2026-49218?

CVE-2026-49218 is a high-severity denial of service vulnerability in Imagemagick Imagemagick, published on 10 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-24, a missing check in the DCM decoder could result in an image with invalid dimensions and that could cause crashes in other operation. This issue has been patched in versions 6.9.13-48 and 7.1.2-24.

Weakness: CWE-1284, CWE-20

Which versions are affected by CVE-2026-49218?

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-2026-49218?

Upgrade Magick.NET-Q16-AnyCPU to 14.14.0 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-2026-49218 being exploited?

There is no known exploitation of CVE-2026-49218 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 CLSA-2026-1782213368, CLSA-2026-1782213853, CLSA-2026-1782214212, DEBIAN-CVE-2026-49218, ECHO-3274-c737-0a57, GHSA-8pj9-6897-74xc and 3 more.