CVE WatchJul 16, 2026

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

CVSS

10.0

Critical

EPSS

4.6%

p91

KEV

—

Exploit Today

0-100

Published: Jul 15, 2026 · Last modified: Jul 16, 2026 · CWE-78 · CWE-306

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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