CVE-2026-62312

Published: Jul 15, 2026Modified: Jul 16, 2026Deferred

8.8

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 2.8 / Impact: 5.9

Source: security-advisories@github.com (Secondary)

Description

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.

Related CWEs

CWE-78

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

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References (4)

https://github.com/decolua/9router/commit/da667836cc7584bea0edd893de1d590c9ea279dc

Source: security-advisories@github.com

https://github.com/decolua/9router/releases/tag/v0.5.2

Source: security-advisories@github.com

https://github.com/decolua/9router/security/advisories/GHSA-63p9-g54h-prrp

Source: security-advisories@github.com

https://github.com/decolua/9router/security/advisories/GHSA-63p9-g54h-prrp

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.