CVE-2026-46339

Description

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 Vector

References

• https://github.com/decolua/9router/commit/992f4db4a0d858bcc86b4786f2abab117a6ccdf8
• https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj
• https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj