GHSA-vfj8-5pj7-2f9g is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in @openc3/tool-common. O3 Security confirms whether GHSA-vfj8-5pj7-2f9g is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
OpenC3 Cross-site Scripting in Login functionality (`GHSL-2024-128`)
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.
@openc3/tool-commonnpmDescription
Summary
The login functionality contains a reflected cross-site scripting (XSS) vulnerability.
Note: This CVE only affects Open Source Edition, and not OpenC3 COSMOS Enterprise Edition
Impact
This issue may lead up to Remote Code Execution (RCE).
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | @openc3/tool-common | all versions | 5.19.0 |
| 🐍PyPI | openc3 | all versions | 5.19.0 |
| 💎RubyGems | openc3 | all versions | 5.19.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @openc3/tool-common. 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 @openc3/tool-common to 5.19.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vfj8-5pj7-2f9g 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-vfj8-5pj7-2f9g 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-vfj8-5pj7-2f9g. 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-vfj8-5pj7-2f9g in your dependencies?
O3 detects GHSA-vfj8-5pj7-2f9g across npm, PyPI, RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.