CVE-2026-62312
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
- 9Router
- Fix
- Available
- CVSS 3.1
- 8.8 HIGH
- EPSS
- 0.7% (50th percentile)
- Weakness
- CWE-78
- NVD status
- Deferred
- Published
- 2026-07-15
CVE-2026-62312 at NVD
No indexed exploits for CVE-2026-62312 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-62312 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.