GHSA-8hw9-22v6-9jr9
HIGHGHSA-8hw9-22v6-9jr9 is a high-severity (CVSS 8.1) Improper Privilege Management vulnerability in @curveball/a12n-server. O3 Security confirms whether GHSA-8hw9-22v6-9jr9 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Any logged in user could edit any other logged in user.
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
@curveball/a12n-servernpmDescription
Impact
Everyone who is running a12n-server.
A new HAL-Form was added to allow editing users. This feature should only have been accessible to admins. Unfortunately, privileges were incorrectly checked allowing any logged in user to make this change.
Patches
Patched in v0.18.2
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | @curveball/a12n-server | ≥ 0.18.0&&< 0.18.2 | 0.18.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @curveball/a12n-server. 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 @curveball/a12n-server to 0.18.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8hw9-22v6-9jr9 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-8hw9-22v6-9jr9 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-8hw9-22v6-9jr9. 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-8hw9-22v6-9jr9 in your dependencies?
O3 detects GHSA-8hw9-22v6-9jr9 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.