CVE-2026-84201appium-mcp-server through 0.1.61 Path Traversal in write_file and write_files_batch
Updated under an hour ago ()
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It affects argneshu appium-mcp-server. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 4, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
argneshu appium-mcp-server argneshu:appium_mcp_server (from the name) | through 0.1.61 | CNA record |
References
- https://www.npmjs.com/package/appium-mcp-serverproduct
- https://github.com/argneshu/appium-mcp-server/blob/92b5c2b325e7bdd124f1f41a6049028b2a44e89c/src/mcp_server.pytechnical-description
- https://github.com/argneshu/appium-mcp-server/blob/92b5c2b325e7bdd124f1f41a6049028b2a44e89c/src/tools/write_files_batch.pytechnical-description
- https://www.vulncheck.com/advisories/appium-mcp-server-through-0.1.61-path-traversal-in-write-file-and-write-files-batchthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.