Is CVE-2026-56366 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-56366 being exploited in the wild.

How severe is CVE-2026-56366?

Low severity, with a CVSS score of 3.3, published 10 July 2026.

Which products and versions are affected?

Magick.NET-Q16-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.11.1; Magick.NET-Q16-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.11.1; Magick.NET-Q16-HDRI-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.11.1; Magick.NET-Q16-HDRI-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.11.1; and 14 more.

Is there a fix for CVE-2026-56366?

Yes. Magick.NET-Q16-AnyCPU (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-OpenMP-x86 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-x86 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-x86 (NuGet): upgrade to 14.11.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-56366 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-56366?

Check whether you run Magick.NET-Q16-AnyCPU (NuGet), Magick.NET-Q16-arm64 (NuGet), Magick.NET-Q16-HDRI-AnyCPU (NuGet) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-56366: ImageMagick memory leak in META reader APP1JPEG path

CVE-2026-56366 · Severity: low · CVSS 3.3 · Published 2026-07-10

ImageMagick, a widely used tool for displaying and converting images, contains a flaw in how it handles certain image metadata. An attacker could provide a specially crafted image file that, when processed, causes the software to consume excessive memory. This can lead to a system slowdown or a complete service outage (denial of service) as the computer runs out of available resources.

Quick answers

Is CVE-2026-56366 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-56366 being exploited in the wild.
How severe is CVE-2026-56366?: Low severity, with a CVSS score of 3.3, published 10 July 2026.
Which products and versions are affected?: Magick.NET-Q16-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.11.1; Magick.NET-Q16-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.11.1; Magick.NET-Q16-HDRI-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.11.1; Magick.NET-Q16-HDRI-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.11.1; and 14 more.
Is there a fix for CVE-2026-56366?: Yes. Magick.NET-Q16-AnyCPU (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-OpenMP-x86 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q16-x86 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-x64 (NuGet): upgrade to 14.11.1 or later; Magick.NET-Q8-x86 (NuGet): upgrade to 14.11.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-56366 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-56366?: Check whether you run Magick.NET-Q16-AnyCPU (NuGet), Magick.NET-Q16-arm64 (NuGet), Magick.NET-Q16-HDRI-AnyCPU (NuGet) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Magick.NET-Q16-AnyCPU (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-AnyCPU --version 14.11.1

Magick.NET-Q16-arm64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-arm64 --version 14.11.1

Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.11.1

Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.11.1

Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.11.1

Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.11.1

Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.11.1

Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.11.1

Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.11.1

Magick.NET-Q16-OpenMP-x86 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-OpenMP-x86 --version 14.11.1

Magick.NET-Q16-x64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-x64 --version 14.11.1

Magick.NET-Q16-x86 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q16-x86 --version 14.11.1

Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q8-AnyCPU --version 14.11.1

Magick.NET-Q8-arm64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q8-arm64 --version 14.11.1

Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.11.1

Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.11.1

Magick.NET-Q8-x64 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q8-x64 --version 14.11.1

Magick.NET-Q8-x86 (NuGet): upgrade to 14.11.1 or later

dotnet add package Magick.NET-Q8-x86 --version 14.11.1

Technical details

A memory leak vulnerability (CWE-401) exists in ImageMagick's META reader component, specifically within the error handling path for APP1JPEG input. The issue is triggered when the application fails to release allocated memory after processing a malformed or specially crafted image file. An attacker can exploit this by inducing a user or automated system to process a malicious APP1JPEG file. Repeated exploitation can lead to resource exhaustion and a denial-of-service (DoS) condition. The vulnerability is addressed in versions 7.1.2-18 and 6.9.13-43.

Affected products

ImageMagick ImageMagick < 7.1.2-18, < 6.9.13-43

Identifiers

CVE-2026-56366
GHSA-9r56-3gjq-hqf7

Timeline

2026-03-24: advisory: GitHub Security Advisory published
2026-07-10: disclosed: NVD publication date

References

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