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TI-2026-06873 Aliases CVE-2026-7811GHSA-3p62-p8gh-rh2w

54yyyu code-mcp MCP File server.py is_safe_path path traversal

Priority HIGH 70CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A vulnerability has been found in 54yyyu code-mcp up to 4cfc4643541a110c906d93635b391bf7e357f4a8. The affected element is the function is_safe_path of the file src/code_mcp/server.py of the component MCP File Handler. Such manipulation leads to path traversal. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The project was informed of the problem early through an issue report but has not responded yet.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00418 36th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
54yyyucode-mcp4cfc4643541a110c906d93635b391bf7e357f4a8—No fix listedCNA
  • code-mcp Vendor54yyyu Affected 4cfc4643541a110c906d93635b391bf7e357f4a8 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-7811
  2. 2026-10-03 Alias added: GHSA-3p62-p8gh-rh2w

References

Exploit 1

Other 1

  • TI-2026-06874 54yyyu code-mcp MCP Tool server.py git_operation command injection CVSS 4.0MEDIUM 6.9
  • TI-2026-70571 zotero-mcp SSRF via zotero_add_by_url Tool CVSS 4.0LOW 2.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences