ALPINE-CVE-2026-19672

ALPINE-CVE-2026-19672

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The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. The containment check used the resolved path, but intermediate directories were created from the name as given. Only empty directories are created outside the destination. Member contents are still extracted inside it. To return to the destination the member's name must contain the destination directory's own final component, so extraction into a secure randomised directory is not affected. This affects POSIX platforms only. On Windows, .. components are collapsed before the path reaches the filesystem, so the directories outside the destination are never created.

CVSS 6.3 · Mittel · Korrektur verfügbar

Veröffentlicht

2026-08-19T16:17:06.593Z

Aktualisiert

2026-10-01T15:30:03.562409795Z

Technologie-Stack: system

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