CVE-2026-19964CWE-74CWE-94code-injection

CVE-2026-19964

Medium · published August 17, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
21.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
CVSS v4.0
5.1 · 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
EPSS
0.00300 · 21.5th percentile
Weaknesses
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-08-17T04:16Z
References (5)
http://github.com/Jij-Inc/Jij-MCP-Server/issues/4 · [email protected]https://vuldb.com/cve/CVE-2026-19964 · [email protected]https://vuldb.com/submit/872906 · [email protected]https://vuldb.com/vuln/391141 · [email protected]https://vuldb.com/vuln/391141/cti · [email protected]
EPSS history
Timeline
  • 16 AUG 23:45Z
    Jij-Inc Jij-MCP-Server jm_check python_repr.py PythonREPL.run code injection
    cvelistv5