CVE-2026-46339
9Router is an AI router & token saver. From 0.4.30 until 0.4.37, 9Router's src/proxy.js middleware did not protect /api/cli-tools/* and /api/mcp/*, allowing unauthenticated registration of customPlugins through src/app/api/cli-tools/cowork-settings/route.js and command execution through the MCP bridge. This vulnerability is fixed in 0.4.37.
- CVSS 3.1
- 10.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS
- 2.8% chance of exploitation in the next 30 days; higher than 86% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-78, CWE-306
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-fhh6-4qxv-rpqj | npm | 9router | >=0.4.30 <0.4.37 | 0.4.37 |