Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/argneshu/appium-mcp-server/blob/92b5c2b325e7bdd124f1f41a60490
- https://github.com/argneshu/appium-mcp-server/blob/92b5c2b325e7bdd124f1f41a60490
- https://www.npmjs.com/package/appium-mcp-server
- https://www.vulncheck.com/advisories/appium-mcp-server-through-0.1.61-path-trave
FAQ
What is CVE-2026-84201?
CVE-2026-84201 is a vulnerability with a CVSS score of 7.1 (HIGH). 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....
How severe is CVE-2026-84201?
CVE-2026-84201 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-84201?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.