CVE-2026-84201
appium-mcp-server through 0.1.61 Path Traversal in write_file and write_files_batch
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | argneshu |
| Product | appium-mcp-server |
| Published | Sep 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
argneshu / appium-mcp-server
0 ≤ 0.1.61
References
npmjs.com: https://www.npmjs.com/package/appium-mcp-server github.com: https://github.com/argneshu/appium-mcp-server/blob/92b5c2b325e7bdd124f1f41a6049028b2a44e89c/src/mcp_server.py github.com: https://github.com/argneshu/appium-mcp-server/blob/92b5c2b325e7bdd124f1f41a6049028b2a44e89c/src/tools/write_files_batch.py vulncheck.com: https://www.vulncheck.com/advisories/appium-mcp-server-through-0.1.61-path-traversal-in-write-file-and-write-files-batch
Credits
mil4n