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Vulnerabilities CVE-2026-63134

CVE-2026-63134

Medium
Open
TLP:CLEAR

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

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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.

Details

CVSS Score
5.4
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Confidence
90%
Published
Aug 11, 2026
Last Modified
Aug 11, 2026
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