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GHSA-26qp-ffjh-2x4v

MEDIUMFix: ImageMagick/ImageMagick@bcd8519

GHSA-26qp-ffjh-2x4v is a medium-severity (CVSS 5.1) CWE-190 vulnerability in Magick.NET-Q16-AnyCPU. O3 Security confirms whether GHSA-26qp-ffjh-2x4v is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

ImageMagick has an integer overflow in despeckle operation causing a heap buffer overflow on 32-bit builds

Also known asCVE-2026-34238
Published
Apr 13, 2026
Updated
May 5, 2026
Affected
6 pkgs
Patched
6 / 6
Exploits
None indexed

Real-World Exposure

6 pkgs affected
.NETMagick.NET-Q16-AnyCPU.NETMagick.NET-Q16-HDRI-AnyCPU.NETMagick.NET-Q16-HDRI-x86.NETMagick.NET-Q16-x86.NETMagick.NET-Q8-AnyCPU.NETMagick.NET-Q8-x86

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

An integer overflow in the despeckle operation causes a heap buffer overflow on 32-bit builds that will result in an out of bounds write.

==1551685==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xea2fb818 at pc 0x56cbc42a bp 0xffc4ce48 sp 0xffc4ce38
WRITE of size 8 at 0xea2fb818 thread T0

Affected Packages

6 total 6 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetMagick.NET-Q16-AnyCPUall versions14.12.0
.NETNuGetMagick.NET-Q16-HDRI-AnyCPUall versions14.12.0
.NETNuGetMagick.NET-Q16-HDRI-x86all versions14.12.0
.NETNuGetMagick.NET-Q16-x86all versions14.12.0
.NETNuGetMagick.NET-Q8-AnyCPUall versions14.12.0
.NETNuGetMagick.NET-Q8-x86all versions14.12.0

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. 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-Q16-AnyCPU to 14.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-26qp-ffjh-2x4v 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 GHSA-26qp-ffjh-2x4v 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 GHSA-26qp-ffjh-2x4v. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

An integer overflow in the despeckle operation causes a heap buffer overflow on 32-bit builds that will result in an out of bounds write. ``` ==1551685==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xea2fb818 at pc 0x56cbc42a bp 0xffc4ce48 sp 0xffc4ce38 WRITE of size 8 at 0xea2fb818 thread T0 ```
O3 Security · Impact-Aware SCA

Is GHSA-26qp-ffjh-2x4v in your dependencies?

O3 detects GHSA-26qp-ffjh-2x4v across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.