@appium/support has a Zip Slip arbitrary file write in its ZIP extraction

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS

• CVE-2026-30973: 0.44% estimated exploitation activity in the next 30 days; percentile 38.40 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary @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. Severity Medium (CVSS 3.1: 6.5) CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - Attack Vector: Network — malicious ZIP files can be supplied over the network (e.g., app packages via URL) - Attack Complexity: Low — no special conditions required beyond providing a crafted ZIP - Privileges Required: None — no authentication needed to supply a malicious archive - User Interaction: Required — a user or automation system must initiate extraction of the attacker's archive - Scope: Unchanged — impact…

Published by the source

11 Mar 2026, 00:22 UTC

Last modified by the source

13 Mar 2026, 04:42 UTC

Source last checked

26 Oct 2026, 12:43 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-rfx7-4xw3-gh4m

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-rfx7-4xw3-gh4m

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# Patch Next advisory brief: CVE-2026-30973

Advisory: @appium/support has a Zip Slip arbitrary file write in its ZIP extraction
IDs: CVE-2026-30973, GHSA-rfx7-4xw3-gh4m
Record: https://patchnext.com/advisories/cve-2026-30973 (revision 2, source checked 26 Oct 2026, 12:43 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @appium/support 7.0.6. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @appium/support: affected <= 7.0.5; fixed in 7.0.6

## Suggested inspection (read-only)
- `npm ls @appium/support --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @appium/support.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-rfx7-4xw3-gh4m (OSV record GHSA-rfx7-4xw3-gh4m lists affected ranges: npm @appium/support >=0 <7.0.6 (fixed))
- Verified: https://github.com/advisories/GHSA-rfx7-4xw3-gh4m (GitHub-reviewed advisory GHSA-rfx7-4xw3-gh4m lists affected ranges: npm @appium/support >=0 <=7.0.5)

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