CVE-2026-56370: ImageMagick out-of-bounds access in ConnectedComponentsImage

CVE-2026-56370 · Severity: low · CVSS 3.3 · Published 2026-06-24

ImageMagick is a software suite used for creating, editing, and converting images. A vulnerability exists where processing a specially crafted image or command can cause the application to crash. This could lead to a temporary service outage or disruption of automated image processing workflows.

Technologies: Magick.NET-Q16-AnyCPU (NuGet), Magick.NET-Q16-arm64 (NuGet), Magick.NET-Q16-HDRI-AnyCPU (NuGet), Magick.NET-Q16-HDRI-arm64 (NuGet), Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet), Magick.NET-Q16-HDRI-OpenMP-x64 (NuGet), Magick.NET-Q16-HDRI-x64 (NuGet), Magick.NET-Q16-HDRI-x86 (NuGet), Magick.NET-Q16-OpenMP-arm64 (NuGet), Magick.NET-Q16-OpenMP-x64 (NuGet), Magick.NET-Q16-x64 (NuGet), Magick.NET-Q16-x86 (NuGet), Magick.NET-Q8-AnyCPU (NuGet), Magick.NET-Q8-arm64 (NuGet), Magick.NET-Q8-OpenMP-arm64 (NuGet), Magick.NET-Q8-OpenMP-x64 (NuGet), Magick.NET-Q8-x64 (NuGet), Magick.NET-Q8-x86 (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2026-56370 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-56370 being exploited in the wild.
How severe is CVE-2026-56370?
Low severity, with a CVSS score of 3.3, published 24 June 2026.
Which products and versions are affected?
Magick.NET-Q16-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.12.0; Magick.NET-Q16-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.12.0; Magick.NET-Q16-HDRI-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.12.0; Magick.NET-Q16-HDRI-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.12.0; and 14 more.
Is there a fix for CVE-2026-56370?
Yes. Magick.NET-Q16-AnyCPU (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-arm64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-HDRI-OpenMP-x64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-x64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q16-x86 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q8-arm64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q8-x64 (NuGet): upgrade to 14.12.0 or later; Magick.NET-Q8-x86 (NuGet): upgrade to 14.12.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-56370 attacked?
It is attacked with local access, in a software library.
Am I affected by CVE-2026-56370?
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 14.12.0 or later
    dotnet add package Magick.NET-Q16-AnyCPU --version 14.12.0
  • Magick.NET-Q16-arm64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-arm64 --version 14.12.0
  • Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.12.0
  • Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.12.0
  • Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.12.0
  • Magick.NET-Q16-HDRI-OpenMP-x64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-HDRI-OpenMP-x64 --version 14.12.0
  • Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.12.0
  • Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.12.0
  • Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.12.0
  • Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.12.0
  • Magick.NET-Q16-x64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-x64 --version 14.12.0
  • Magick.NET-Q16-x86 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q16-x86 --version 14.12.0
  • Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q8-AnyCPU --version 14.12.0
  • Magick.NET-Q8-arm64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q8-arm64 --version 14.12.0
  • Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.12.0
  • Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.12.0
  • Magick.NET-Q8-x64 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q8-x64 --version 14.12.0
  • Magick.NET-Q8-x86 (NuGet): upgrade to 14.12.0 or later
    dotnet add package Magick.NET-Q8-x86 --version 14.12.0

Technical details

An out-of-bounds access vulnerability exists in ImageMagick's ConnectedComponentsImage() function. The issue is triggered when the 'connected-components:*' define specifies an invalid index, leading to an access violation (CWE-125, CWE-787). An attacker can exploit this by providing a malicious image or command-line argument that requires user interaction to process. This results in a denial-of-service (application crash). The vulnerability is addressed in Magick.NET version 14.12.0.

Affected products

  • ImageMagick Magick.NET-Q16-AnyCPU < 14.12.0
  • ImageMagick Magick.NET-Q16-HDRI-AnyCPU < 14.12.0
  • ImageMagick Magick.NET-Q16-HDRI-OpenMP-arm64 < 14.12.0
  • ImageMagick Magick.NET-Q16-HDRI-OpenMP-x64 < 14.12.0
  • ImageMagick Magick.NET-Q16-HDRI-arm64 < 14.12.0
  • ImageMagick Magick.NET-Q16-HDRI-x64 < 14.12.0
  • ImageMagick Magick.NET-Q16-HDRI-x86 < 14.12.0
  • ImageMagick Magick.NET-Q16-OpenMP-arm64 < 14.12.0
  • ImageMagick Magick.NET-Q16-OpenMP-x64 < 14.12.0
  • ImageMagick Magick.NET-Q16-arm64 < 14.12.0
  • ImageMagick Magick.NET-Q16-x64 < 14.12.0
  • ImageMagick Magick.NET-Q16-x86 < 14.12.0
  • ImageMagick Magick.NET-Q8-AnyCPU < 14.12.0
  • ImageMagick Magick.NET-Q8-OpenMP-arm64 < 14.12.0
  • ImageMagick Magick.NET-Q8-OpenMP-x64 < 14.12.0
  • ImageMagick Magick.NET-Q8-arm64 < 14.12.0
  • ImageMagick Magick.NET-Q8-x64 < 14.12.0
  • ImageMagick Magick.NET-Q8-x86 < 14.12.0

Identifiers

  • CVE-2026-56370
  • GHSA-pmpg-6pww-fg6q

Timeline

  • 2026-04-14: advisory: GitHub Advisory published
  • 2026-04-14: patched: Magick.NET 14.12.0 released

References

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