CVE-2026-23744 CRITICAL

CVE-2026-23744: REC in MCPJam inspector due to HTTP Endpoint exposes

Vendor Mcpjam
Product inspector
Weakness CWE-306 · Missing auth
Published January 16, 2026
Last update January 16, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

MCPJam inspector is the local-first development platform for MCP servers. Versions 1.4.2 and earlier are vulnerable to remote code execution (RCE) vulnerability, which allows an attacker to send a crafted HTTP request that triggers the installation of an MCP server, leading to RCE. Since MCPJam inspector by default listens on 0.0.0.0 instead of 127.0.0.1, an attacker can trigger the RCE remotely via a simple HTTP request. Version 1.4.3 contains a patch.

Key dates

02Disclosure timeline

January 16, 2026 CVE published
January 16, 2026 Record updated