GHSA-hq6q-c2x6-hmch is a high-severity (CVSS 8.8) Improper Input Validation vulnerability in k8s.io/kubernetes. O3 Security confirms whether GHSA-hq6q-c2x6-hmch is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Kubernetes Improper Input Validation vulnerability
Real-World Exposure
k8s.io/kubernetes🐹k8s.io/kubernetes🐹k8s.io/kubernetes🐹k8s.io/kubernetesReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
A security issue was discovered in Kubernetes where a user that can create pods and persistent volumes on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they are using an in-tree storage plugin for Windows nodes.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | k8s.io/kubernetes | ≥ 1.28.0&&< 1.28.4 | 1.28.4 |
| 🐹Go | k8s.io/kubernetes | ≥ 1.27.0&&< 1.27.8 | 1.27.8 |
| 🐹Go | k8s.io/kubernetes | ≥ 1.26.0&&< 1.26.11 | 1.26.11 |
| 🐹Go | k8s.io/kubernetes | all versions | 1.25.16 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for k8s.io/kubernetes. 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 k8s.io/kubernetes to 1.28.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-hq6q-c2x6-hmch 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-hq6q-c2x6-hmch 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-hq6q-c2x6-hmch. 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-hq6q-c2x6-hmch in your dependencies?
O3 detects GHSA-hq6q-c2x6-hmch across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.