Is CVE-2026-19964 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-19964?

CVE-2026-19964 has a CVSS v3 severity of MEDIUM (5.5).

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CVE-2026-19964

Description

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.