Vulnerability Details CVE-2026-23744
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.172
EPSS Ranking 94.9%
CVSS Severity
CVSS v3 Score 9.8
References