Command Injection Affecting 9router package, versions >=0.4.59 <0.5.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-9ROUTER-17987657
- published16 Jul 2026
- disclosed15 Jul 2026
- creditUnknown
Introduced: 15 Jul 2026
NewCVE-2026-62312 (opens in a new tab)How to fix?
Upgrade 9router to version 0.5.2 or higher.
Overview
9router is a 9Router CLI - Start and manage 9Router server
Affected versions of this package are vulnerable to Command Injection via unvalidated arguments passed to the child_process.spawn function. An attacker can execute arbitrary commands on the host operating system by sending malicious custom plugins through the /api/mcp//sse endpoint after bypassing localhost-only route restrictions using a crafted Host header.