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.NET NuGet

CVE-2026-23874

MEDIUM

CVE-2026-23874 is a medium-severity (CVSS 5.5) CWE-835 vulnerability in Magick.NET-Q8-x64. O3 Security confirms whether CVE-2026-23874 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

ImageMagick's MSL: Stack overflow via infinite recursion in ProcessMSLScript

Also known asGHSA-9vj4-wc7r-p844
Published
Jan 20, 2026
Updated
Jul 15, 2026
Affected
18 pkgs
Patched
18 / 18
Exploits
None indexed

Real-World Exposure

18 pkgs affected
.NETMagick.NET-Q8-x64.NETMagick.NET-Q8-arm64.NETMagick.NET-Q8-x86.NETMagick.NET-Q8-OpenMP-x64.NETMagick.NET-Q8-OpenMP-arm64.NETMagick.NET-Q16-x64.NETMagick.NET-Q16-arm64.NETMagick.NET-Q16-x86+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 is free and open-source software used for editing and manipulating digital images. Versions prior to 7.1.2-13 have a stack overflow via infinite recursion in MSL (Magick Scripting Language) <write> command when writing to MSL format. Version 7.1.2-13 fixes the issue.

Affected Packages

18 total 18 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetMagick.NET-Q8-x64all versions14.10.2
.NETNuGetMagick.NET-Q8-arm64all versions14.10.2
.NETNuGetMagick.NET-Q8-x86all versions14.10.2
.NETNuGetMagick.NET-Q8-OpenMP-x64all versions14.10.2
.NETNuGetMagick.NET-Q8-OpenMP-arm64all versions14.10.2
.NETNuGetMagick.NET-Q16-x64all versions14.10.2

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-Q8-x64. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update Magick.NET-Q8-x64 to 14.10.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-23874 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.

  4. How O3 protects you

    O3 pinpoints whether CVE-2026-23874 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to CVE-2026-23874. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions prior to 7.1.2-13 have a stack overflow via infinite recursion in MSL (Magick Scripting Language) `<write>` command when writing to MSL format. Version 7.1.2-13 fixes the issue.
O3 Security · Impact-Aware SCA

Is CVE-2026-23874 in your dependencies?

O3 detects CVE-2026-23874 across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.