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OpenAdvisories
Medium · 5.4 CVE-2026-63134 EUVD-2026-56971

Malcolm's Path Traversal in Archive Extraction Allows Arbitrary Directory Creation

Published Aug 11, 2026 · Updated Oct 2, 2026 · Assigned by GitHub_M

Description

Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, `safe-extract.py` protects file extraction with libarchive's secure flags, but creates directory entries with a raw `os.makedirs(os.path.join(dest, entry.pathname))` that has no traversal protection. An uploaded malicious archive containing a directory entry with a `../` sequence or an absolute path causes the filebeat processing container to create directories outside the intended extraction directory. Version 26.07.0 fixes the issue.

Affected products

VendorProductAffectedFixed
cisagov Malcolm < 26.07.0 26.07.0

Advisories 1

References