CVE-2026-19964

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

Published Aug 16, 2026 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Jij-Inc Jij-MCP-Server jm_check python_repr.py PythonREPL.run code injection
First Time appeared Jij-inc
Jij-inc jij-mcp-server
Weaknesses CWE-74
CWE-94
CPEs cpe:2.3:a:jij-inc:jij-mcp-server:*:*:*:*:*:*:*:*
Vendors & Products Jij-inc
Jij-inc jij-mcp-server
References
Metrics cvssV2_0

{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 5.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 5.5, 'vector': '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'}

cvssV4_0

{'score': 5.1, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
Aug 18, 2026, 1:37 PM
Reserved
Aug 16, 2026, 7:12 AM
Status
Deferred
Published
Aug 17, 2026, 12:16 AM
Modified
Aug 20, 2026, 12:48 PM