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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/decolua/9router/commit/da667836cc7584bea0edd893de1d590c9ea279dc
https://github.com/decolua/9router/releases/tag/v0.5.2
https://github.com/decolua/9router/security/advisories/GHSA-63p9-g54h-prrp
https://github.com/decolua/9router/security/advisories/GHSA-63p9-g54h-prrp

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-15 21:16

Updated : 2026-07-16 19:16

NVD link : CVE-2026-62312

Mitre link : CVE-2026-62312

CVE.ORG link : CVE-2026-62312

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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