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CVE PROGRAM SOURCE RECORD10.0 Critical

CVE-2026-46339

9Router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

decolua 9router

  • >= 0.4.30, < 0.4.37affected

References