CVE-2026-55628 ImageMagick: Policy Bypass in concatenate operation due to missing checks

Medium 5.5 Published Updated

Attackers can bypass security policies to read or write restricted files via the concatenate operation in ImageMagick.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2026-55628?

CVE-2026-55628 is a medium-severity vulnerability in ImageMagick, published on 1 Jul 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 prior to 7.1.2-26he, the `-concatenate` operation is missing policy checks, potentially resulting in both reading and writing to paths disallowed by the security policy. This issue has been fixed in version 7.1.2-26.

Weakness: CWE-862, CWE-73

Which versions are affected by CVE-2026-55628?

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.

PackageAffectedFixed in
Magick.NET-Q16-AnyCPU NuGetAll versions14.15.0
Magick.NET-Q16-AnyCPU NuGetAll versions14.15.0
Magick.NET-Q16-HDRI-AnyCPU NuGetAll versions14.15.0
Magick.NET-Q16-HDRI-AnyCPU NuGetAll versions14.15.0
Magick.NET-Q16-HDRI-OpenMP-arm64 NuGetAll versions14.15.0
Magick.NET-Q16-HDRI-OpenMP-arm64 NuGetAll versions14.15.0
28 more packages
Magick.NET-Q16-HDRI-arm64 NuGetAll versions14.15.0
Magick.NET-Q16-HDRI-arm64 NuGetAll versions14.15.0
Magick.NET-Q16-HDRI-x64 NuGetAll versions14.15.0
Magick.NET-Q16-HDRI-x64 NuGetAll versions14.15.0
Magick.NET-Q16-HDRI-x86 NuGetAll versions14.15.0
Magick.NET-Q16-HDRI-x86 NuGetAll versions14.15.0
Magick.NET-Q16-OpenMP-arm64 NuGetAll versions14.15.0
Magick.NET-Q16-OpenMP-arm64 NuGetAll versions14.15.0
Magick.NET-Q16-OpenMP-x64 NuGetAll versions14.15.0
Magick.NET-Q16-OpenMP-x64 NuGetAll versions14.15.0
Magick.NET-Q16-arm64 NuGetAll versions14.15.0
Magick.NET-Q16-arm64 NuGetAll versions14.15.0
Magick.NET-Q16-x64 NuGetAll versions14.15.0
Magick.NET-Q16-x64 NuGetAll versions14.15.0
Magick.NET-Q16-x86 NuGetAll versions14.15.0
Magick.NET-Q16-x86 NuGetAll versions14.15.0
Magick.NET-Q8-AnyCPU NuGetAll versions14.15.0
Magick.NET-Q8-AnyCPU NuGetAll versions14.15.0
Magick.NET-Q8-OpenMP-arm64 NuGetAll versions14.15.0
Magick.NET-Q8-OpenMP-arm64 NuGetAll versions14.15.0
Magick.NET-Q8-OpenMP-x64 NuGetAll versions14.15.0
Magick.NET-Q8-OpenMP-x64 NuGetAll versions14.15.0
Magick.NET-Q8-arm64 NuGetAll versions14.15.0
Magick.NET-Q8-arm64 NuGetAll versions14.15.0
Magick.NET-Q8-x64 NuGetAll versions14.15.0
Magick.NET-Q8-x64 NuGetAll versions14.15.0
Magick.NET-Q8-x86 NuGetAll versions14.15.0
Magick.NET-Q8-x86 NuGetAll versions14.15.0

How do I fix CVE-2026-55628?

Upgrade Magick.NET-Q16-AnyCPU to 14.15.0 or later.

Is CVE-2026-55628 being exploited?

There is no known exploitation of CVE-2026-55628 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2026-55628, ECHO-dd51-36a7-172c, GHSA-82mp-vp5c-9pf7, JLSEC-2026-1041, MINI-ccwr-rjhx-7288, UBUNTU-CVE-2026-55628.

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