Zip Slip arbitrary file write in @appium/support ZIP extraction
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Appium is an automation framework that provides WebDriver-based automation possibilities for a wide range platforms. Prior to 7.0.6, @appium/support contains a ZIP extraction implementation (extractAllTo() via ZipExtractor.extract()) with a path traversal (Zip Slip) check that is non-functional. The check at line 88 of packages/support/lib/zip.js creates an Error object but never throws it, allowing malicious ZIP entries with ../ path components to write files outside the intended destination directory. This affects all JS-based extractions (the default code path), not only those using the fileNamesEncoding option. This vulnerability is fixed in 7.0.6.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 |
|---|---|---|---|---|---|
| appium | support | before 7.0.6 | 7.0.6 | Patch available | CNA |
| — | @appium/support (npm) | before 7.0.6 | 7.0.6 | Patch available | GHSA-rfx7-4xw3-gh4m |
- support Vendorappium Affected before 7.0.6 Fixed in 7.0.6 Patch available CNA
- @appium/support (npm) Vendor— Affected before 7.0.6 Fixed in 7.0.6 Patch available GHSA-rfx7-4xw3-gh4m
Remediation
- Fix · CNA support (@appium) Fixed in 7.0.6
- Fix · GHSA-rfx7-4xw3-gh4m @appium/support (npm) Fixed in 7.0.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-30973
- 2026-10-03 Alias added: GHSA-rfx7-4xw3-gh4m
References
Sources
- CVE-2026-30973 · CVE Program
- CVE-2026-30973 · NVD
- FIRST EPSS
- GHSA-rfx7-4xw3-gh4m · GitHub Advisory Database · CC BY 4.0
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