Missing Authentication for Critical Function Affecting @mcpjam/inspector package, versions <1.4.3
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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Start learning- Snyk IDSNYK-JS-MCPJAMINSPECTOR-15032953
- published18 Jan 2026
- disclosed16 Jan 2026
- creditc2an1
Introduced: 16 Jan 2026
NewCVE-2026-23744 (opens in a new tab)How to fix?
Upgrade @mcpjam/inspector to version 1.4.3 or higher.
Overview
@mcpjam/inspector is a MCPJam Inspector
Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the connect route in the HTTP API. An attacker can execute arbitrary commands on the host system by sending a crafted HTTP request containing malicious command and args fields, which are processed without authentication or authorization checks.