high8.8
CVE-2026-62312
9Router is an AI router & token saver.
Impact
9Router is an AI router & token saver. Prior to 0.5.2, 9Router allows a remote authenticated attacker to achieve arbitrary code execution on the host operating system by combining a Host header bypass of localhost-only routes with unvalidated MCP plugin args passed to child_process.spawn(), allowing malicious custom plugins to execute commands through /api/mcp//sse. This issue is fixed in version 0.5.2.
Affected products
| Product | Affected versions |
|---|---|
| 9Router Is An AI Router & Token Saver. | before 0.5.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.