# CVE-2026-56375: ImageMagick memory leak in ASHLAR coder

Source: https://junglewise.ai/threats/cve-2026-56375-imagemagick-memory-leak-in-ashlar-coder  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-15. Updated: 2026-07-15  
License: CC BY 4.0 with a link back

CVE-2026-56375 · Severity: low · CVSS 3.3 · Published 2026-07-15

ImageMagick is a widely used software suite for displaying, converting, and editing image files. A flaw in how it handles specific image processing tasks (the ASHLAR coder) can cause the software to consume excessive memory if a task fails. An attacker could use this to crash the application or slow down the system, potentially disrupting services that rely on ImageMagick for automated image processing.

Technologies: [Magick.NET-Q16-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-anycpu), [Magick.NET-Q16-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-arm64), [Magick.NET-Q16-HDRI-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-anycpu), [Magick.NET-Q16-HDRI-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-arm64), [Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-openmp-arm64), [Magick.NET-Q16-HDRI-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-x64), [Magick.NET-Q16-HDRI-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-x86), [Magick.NET-Q16-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-arm64), [Magick.NET-Q16-OpenMP-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-x64), [Magick.NET-Q16-OpenMP-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-x86), [Magick.NET-Q16-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-x64), [Magick.NET-Q16-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-x86), [Magick.NET-Q8-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-anycpu), [Magick.NET-Q8-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-arm64), [Magick.NET-Q8-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-openmp-arm64), [Magick.NET-Q8-OpenMP-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-openmp-x64), [Magick.NET-Q8-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-x64), [Magick.NET-Q8-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-x86). Vendors: [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is CVE-2026-56375 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56375 being exploited in the wild.

**How severe is CVE-2026-56375?** Low severity, with a CVSS score of 3.3, published 15 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-2026-56375?** 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-2026-56375 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-56375?** 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

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

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

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

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

  ```sh
  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

  ```sh
  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

  ```sh
  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

  ```sh
  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

  ```sh
  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

  ```sh
  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

  ```sh
  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

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

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

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

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

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

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

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

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

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

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

  ```sh
  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

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

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

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

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

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


## Technical details

A memory leak vulnerability (CWE-401) exists in ImageMagick's ASHLAR coder component. The issue occurs when a temporary image is not properly released following a failed action during processing. An attacker can exploit this by providing specially crafted input that triggers these failures, leading to memory exhaustion and a subsequent denial of service (DoS). Exploitation requires local access and user interaction, such as a user or automated process attempting to convert a malicious image. As of the advisory date, no official patch has been confirmed beyond version 7.1.2-18.

## Affected products

- ImageMagick ImageMagick <= 7.1.2-18

## Identifiers

- CVE-2026-56375
- GHSA-6p22-q7w5-33pg

## Timeline

- 2026-03-24: advisory: Initial GitHub Security Advisory published
- 2026-07-15: disclosed: CVE-2026-56375 published to NVD

## References

- [https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-6p22-q7w5-33pg](https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-6p22-q7w5-33pg)
- [https://www.vulncheck.com/advisories/imagemagick-memory-leak-in-ashlar-coder-action-failure](https://www.vulncheck.com/advisories/imagemagick-memory-leak-in-ashlar-coder-action-failure)

## Related threats

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- [ImageMagick heap buffer overflow in fx operation](https://junglewise.ai/threats/cve-2026-62363-imagemagick-heap-buffer-overflow-in-fx-operation)
- [ImageMagick heap buffer overwrite in morphology operation](https://junglewise.ai/threats/cve-2026-62343-imagemagick-heap-buffer-overwrite-in-morphology-operation)
- [ImageMagick memory leak in magick CLI via invalid options](https://junglewise.ai/threats/cve-2026-66011-imagemagick-memory-leak-in-magick-cli-via-invalid-options)
- [ImageMagick memory leak in TIFF encoder](https://junglewise.ai/threats/cve-2026-61872-imagemagick-memory-leak-in-tiff-encoder)