CVE-2026-61870 ImageMagick before 7.1.2-26 Memory Leak via VIFF Encoder

What is CVE-2026-61870?

CVE-2026-61870 is a low-severity denial of service vulnerability in Imagemagick Imagemagick, published on 11 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

ImageMagick before 7.1.2-26 contains a memory leak vulnerability in the VIFF encoder when memory allocation fails. Attackers can trigger allocation failures by processing specially crafted VIFF images to exhaust available memory and cause denial of service.

Weakness: CWE-401

Which versions are affected by CVE-2026-61870?

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-2026-61870?

Upgrade Magick.NET-Q16-AnyCPU to 14.15.0 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-2026-61870 being exploited?

There is no known exploitation of CVE-2026-61870 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 CLSA-2026-1784282985, CLSA-2026-1784303001, DEBIAN-CVE-2026-61870, ECHO-af5a-046f-f3b2, GHSA-fhrj-r6ww-vq67, GHSA-m596-67p7-69wh and 6 more.