GHSA-mvmv-rq2j-97p2 is a critical-severity (CVSS 9.8) Improper Input Validation vulnerability in ep_etherpad-lite. A fix is available for ep_etherpad-lite — see the affected versions and patch details below.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
ep_etherpad-litenpmDescription
node/hooks/express/apicalls.js in Etherpad Lite before v1.6.3 mishandles JSONP, which allows remote attackers to bypass intended access restrictions.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | ep_etherpad-lite | all versions | 1.6.3npm install ep_etherpad-lite@1.6.3 |
Affected Products
etherpadetherpadDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ep_etherpad-lite, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update ep_etherpad-lite to 1.6.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-mvmv-rq2j-97p2 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.
Frequently Asked Questions
Is GHSA-mvmv-rq2j-97p2 in your dependencies?
Find it across npm, including transitive dependencies.