GHSA-wvpv-ffcv-r6cw
MEDIUMGHSA-wvpv-ffcv-r6cw is a medium-severity (CVSS 5.1) CWE-288 vulnerability in HaemmerElectronics.SeppPenner.WindowsHello. O3 Security confirms whether GHSA-wvpv-ffcv-r6cw is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Internal NCryptDecrypt method could be used externally from WindowsHello library.
Real-World Exposure
HaemmerElectronics.SeppPenner.WindowsHelloReal-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
Impact
Every user of the library before version 1.0.4.
Patches
Patched in 1.0.4+.
Workarounds
None.
References
https://github.com/SeppPenner/WindowsHello/issues/3
For more information
It this library is used to encrypt text and write the output to a txt file, another executable could be able to decrypt the text using the static method NCryptDecrypt from this same library without the need to use Windows Hello Authentication again.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | HaemmerElectronics.SeppPenner.WindowsHello | all versions | 1.0.4 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for HaemmerElectronics.SeppPenner.WindowsHello. 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 HaemmerElectronics.SeppPenner.WindowsHello to 1.0.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wvpv-ffcv-r6cw 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-wvpv-ffcv-r6cw 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-wvpv-ffcv-r6cw. 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-wvpv-ffcv-r6cw in your dependencies?
O3 detects GHSA-wvpv-ffcv-r6cw across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.