CVE-2026-19964

MEDIUM 5.5

Jij-Inc Jij-MCP-Server jm_check python_repr.py PythonREPL.run code injection

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-94 CWE-74
Vendor	jij-inc
Product	jij-mcp-server
Published	Aug 16, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Jij-Inc / Jij-MCP-Server

0.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/391141 vuldb.com: https://vuldb.com/vuln/391141/cti vuldb.com: https://vuldb.com/cve/CVE-2026-19964 vuldb.com: https://vuldb.com/submit/872906 github.com: http://github.com/Jij-Inc/Jij-MCP-Server/issues/4

Credits

🔍 TianyuLi (VulDB User) VulDB CNA Team