CVE-2026-19964: medium-severity vulnerability in Jij-Inc Jij-MCP-Server
Jij-Inc Jij-MCP-Server jm_check python_repr.py PythonREPL.run code injection
Published · Updated
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33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.1epss 0.3%
A vulnerability was found in Jij-Inc Jij-MCP-Server 0.1.0. This affects the function PythonREPL.run of the file jij_mcp/python_repr.py of the component jm_check. The manipulation of the argument code results in code injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
Jij-Inc · Jij-MCP-Serverpublic PoCs found — 1
cve_referencegithub.com/Jij-Inc/Jij-MCP-Server/issues/4unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.