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LOW severity

ImageMagick has possible memory leak in ASHLAR coder when action failsGHSA-6p22-q7w5-33pg

LOW

GHSA-6p22-q7w5-33pg is a low-severity (CVSS 3.3) CWE-401 vulnerability in Magick.NET-Q16-AnyCPU. A fix is available for Magick.NET-Q16-AnyCPU — see the affected versions and patch details below.

Also known asCVE-2026-56375
Published
Updated
Affected
18 pkgs
Patched
18 / 18
Exploits
None indexed
Exploitation data as of Oct 26, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-6p22-q7w5-33pg.

EPSS Exploitation Probability

via FIRST.org ↗
0.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs4th percentile — riskier than 4% of all scored CVEsHighest risk
0.00%0.22%0.43%0.65%0.1%0.1%0.1%0.1%Aug 26Oct 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

18 pkgs affected
.NETMagick.NET-Q16-AnyCPU.NETMagick.NET-Q16-HDRI-AnyCPU.NETMagick.NET-Q16-HDRI-OpenMP-arm64.NETMagick.NET-Q16-HDRI-arm64.NETMagick.NET-Q16-HDRI-x64.NETMagick.NET-Q16-HDRI-x86.NETMagick.NET-Q16-OpenMP-arm64.NETMagick.NET-Q16-OpenMP-x64+10 more

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

ImageMagick through 7.1.2-18 contains a memory leak vulnerability in the ASHLAR coder when an action fails. Attackers can trigger failed actions to exhaust memory resources and cause denial of service.

Affected Packages

18 total 18 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetMagick.NET-Q16-AnyCPUall versions14.11.1dotnet add package Magick.NET-Q16-AnyCPU --version 14.11.1
.NETNuGetMagick.NET-Q16-HDRI-AnyCPUall versions14.11.1dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.11.1
.NETNuGetMagick.NET-Q16-HDRI-OpenMP-arm64all versions14.11.1dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.11.1
.NETNuGetMagick.NET-Q16-HDRI-arm64all versions14.11.1dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.11.1
.NETNuGetMagick.NET-Q16-HDRI-x64all versions14.11.1dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.11.1
.NETNuGetMagick.NET-Q16-HDRI-x86all versions14.11.1dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.11.1

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Magick.NET-Q16-AnyCPU, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update Magick.NET-Q16-AnyCPU to 14.11.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6p22-q7w5-33pg is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatLow

Red Hat Enterprise Linux ships ImageMagick in RHEL 6 ELS and RHEL 7 ELS. This flaw has been rated as having a Low security impact and is not currently planned to be addressed in future updates of those products. For additional information, refer to the Issue Severity Classification:…

Workaround published by Red Hat
Do not process untrusted image files with ImageMagick. The ASHLAR coder can be disabled in ImageMagick's policy.xml if not needed: `<policy domain="coder" rights="none" pattern="ASHLAR"/>`. Upgrade to ImageMagick 7.1.2-26 or 6.9.13-51 mitigates the issue.
Source: Red Hat security advisory for GHSA-6p22-q7w5-33pg (CC BY 4.0)

Frequently Asked Questions

The ASHLAR coder leaks a temporary image when an action fails and that could result to an out of memory.
O3 Security · Impact-Aware SCA

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ImageMagick has possible memory leak in ASHLAR…