CVE-2026-61871: ImageMagick memory leak in ICON decoder

CVE-2026-61871 · Severity: low · CVSS 3.7 · Published 2026-07-15

ImageMagick is a widely used software suite for displaying, converting, and editing image files. A flaw in how it handles ICON files can cause the system to leak memory if a specific memory error occurs during processing. An attacker could use a specially crafted image to slowly consume system resources, potentially causing the application to crash or become unresponsive.

Technologies: ImageMagick, 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-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: ImageMagick, NuGet.

Quick answers

Is CVE-2026-61871 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-61871 being exploited in the wild.
How severe is CVE-2026-61871?
Low severity, with a CVSS score of 3.7, published 15 July 2026.
Which products and versions are affected?
ImageMagick < 7.1.2-26, < 6.9.13-51; Magick.NET-Q16-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.15.0; Magick.NET-Q16-arm64 (NuGet) ECOSYSTEM:introduced=0,fixed=14.15.0; Magick.NET-Q16-HDRI-AnyCPU (NuGet) ECOSYSTEM:introduced=0,fixed=14.15.0; and 14 more.
Is there a fix for CVE-2026-61871?
Yes. Magick.NET-Q16-AnyCPU (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q16-x86 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-x64 (NuGet): upgrade to 14.15.0 or later; Magick.NET-Q8-x86 (NuGet): upgrade to 14.15.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-61871 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-61871?
Check whether you run ImageMagick, Magick.NET-Q16-AnyCPU (NuGet), Magick.NET-Q16-arm64 (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 14.15.0 or later
    dotnet add package Magick.NET-Q16-AnyCPU --version 14.15.0
  • Magick.NET-Q16-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-arm64 --version 14.15.0
  • Magick.NET-Q16-HDRI-AnyCPU (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.15.0
  • Magick.NET-Q16-HDRI-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.15.0
  • Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.15.0
  • Magick.NET-Q16-HDRI-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.15.0
  • Magick.NET-Q16-HDRI-x86 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.15.0
  • Magick.NET-Q16-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.15.0
  • Magick.NET-Q16-OpenMP-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.15.0
  • Magick.NET-Q16-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-x64 --version 14.15.0
  • Magick.NET-Q16-x86 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q16-x86 --version 14.15.0
  • Magick.NET-Q8-AnyCPU (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-AnyCPU --version 14.15.0
  • Magick.NET-Q8-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-arm64 --version 14.15.0
  • Magick.NET-Q8-OpenMP-arm64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.15.0
  • Magick.NET-Q8-OpenMP-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.15.0
  • Magick.NET-Q8-x64 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-x64 --version 14.15.0
  • Magick.NET-Q8-x86 (NuGet): upgrade to 14.15.0 or later
    dotnet add package Magick.NET-Q8-x86 --version 14.15.0

Technical details

A memory leak vulnerability (CWE-401) exists in the ICON decoder of ImageMagick versions prior to 7.1.2-26 and 6.9.13-51. The issue is triggered when a memory allocation failure occurs during the decoding process, failing to release previously allocated resources. An attacker can exploit this by providing a specially crafted ICON file designed to trigger these allocation failures. While the attack complexity is high, successful exploitation allows for gradual memory exhaustion, leading to a denial of service (DoS) condition. The issue has been patched in versions 7.1.2-26 and 6.9.13-51.

Affected products

  • ImageMagick ImageMagick < 7.1.2-26, < 6.9.13-51

Identifiers

  • CVE-2026-61871
  • GHSA-h58x-r7f7-rh84

Timeline

  • 2026-06-26: advisory: GitHub Security Advisory published
  • 2026-07-15: disclosed: CVE published to NVD dataset

References

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