Medium 5.5Published Aug 16, 2026

CVE-2026-19964Jij-Inc Jij-MCP-Server jm_check python_repr.py PythonREPL.run code injection

Updated under an hour ago (2026-10-19 07:00 UTC)

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Every CVE for Jij-Inc Jij-MCP-Server

Exploited in the last 30 days

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: 5.5 MEDIUM (v3.1, CNA)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
Weakness (CWE): CWE-94, CWE-74
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Aug 18, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Jij-Inc Jij-MCP-Server jij-inc:jij-mcp-server	0.1.0	CNA record

References

https://vuldb.com/vuln/391141vdb-entry, technical-description
https://vuldb.com/vuln/391141/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-19964third-party-advisory
https://vuldb.com/submit/872906third-party-advisory
http://github.com/Jij-Inc/Jij-MCP-Server/issues/4exploit, issue-tracking

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.