Jij-Inc Jij-MCP-Server jm_check python_repr.py PythonREPL.run code injection
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Jij-Inc | Jij-MCP-Server | 0.1.0 | — | No fix listed | CNA |
- Jij-MCP-Server VendorJij-Inc Affected 0.1.0 Fixed in — No fix listed CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jij-inc:jij-mcp-server:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:jij-inc:jij-mcp-server:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-19964
- 2026-10-03 Alias added: GHSA-g33m-cxj9-5gvx
References
Sources
- CVE-2026-19964 · CVE Program
- CVE-2026-19964 · NVD
- FIRST EPSS
- GHSA-g33m-cxj9-5gvx · GitHub Advisory Database · CC BY 4.0
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