← CVE Intelligence

CVE-2026-62312

9Router: Authenticated RCE via Unvalidated MCP Plugin Arguments PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
decolua / 9routeraffected < 0.5.2

CWE

CWE-78

References

ADP enrichment

CISA-ADP

No English description supplied.