npm/9router CVE-2026-46339: critical 10, EPSS 2.76%
9router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes
Action: Upgrade 9router to 0.4.37 or later.
npm i 9router@0.4.37Affected
| introduced | fixed | last affected |
|---|---|---|
| 0.4.30 | 0.4.37 | - |
Fixed versions
| 0.4.37 |
Sources
- osv: GHSA-fhh6-4qxv-rpqj
- https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj
- https://github.com/decolua/9router
CVE-2026-46339 · published · modified · JSON