Advisories for Npm/@Appium/Support package

CVE-2026-30973 (GHSA-rfx7-4xw3-gh4m) was a plain path traversal in the entry name. The containment check built an Error object without throwing it, so an entry literally named something like ../evil.txt was written outside the destination. That issue was fixed in @appium/support 7.0.6 by actually rejecting out of bound entry names. This finding is a different vector that the 7.0.6 fix does not cover. The archive entry names here are completely legitimate …

@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.