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
Real-World Exposure
Magick.NET-Q16-AnyCPU.NETMagick.NET-Q16-HDRI-AnyCPU.NETMagick.NET-Q16-HDRI-x86.NETMagick.NET-Q16-x86.NETMagick.NET-Q8-AnyCPU.NETMagick.NET-Q8-x86Real-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
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | Magick.NET-Q16-AnyCPU | all versions | 14.12.0 |
| .NETNuGet | Magick.NET-Q16-HDRI-AnyCPU | all versions | 14.12.0 |
| .NETNuGet | Magick.NET-Q16-HDRI-x86 | all versions | 14.12.0 |
| .NETNuGet | Magick.NET-Q16-x86 | all versions | 14.12.0 |
| .NETNuGet | Magick.NET-Q8-AnyCPU | all versions | 14.12.0 |
| .NETNuGet | Magick.NET-Q8-x86 | all versions | 14.12.0 |
Detection & mitigation playbook
Open-source dependencyDetect
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.
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.
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.
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
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.