TI-2026-57896 Aliases CVE-2026-84201 GHSA-j4m2-645j-49qh

appium-mcp-server through 0.1.61 Path Traversal in write_file and write_files_batch

LOW 30CWE-22Published 2026-09-01 · Updated 2026-09-04

Key facts

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

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

Summary

appium-mcp-server through 0.1.61 fails to validate or normalize file paths in the write_file and write_files_batch tools, allowing attackers to write files outside the intended PROJECT_ROOT directory. Attackers can supply absolute paths or relative paths with parent directory segments to overwrite arbitrary files with the server user's privileges, including shell profiles and configuration files in the home directory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00187 8th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
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
argneshu	appium-mcp-server	up to 0.1.61	—	No fix listed	CNA

appium-mcp-server Vendorargneshu Affected up to 0.1.61 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-84201
2026-10-03 Alias added: GHSA-j4m2-645j-49qh

References

Other 3

Sources

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