Is CVE-2026-63134 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-63134?

CVE-2026-63134 has a CVSS v3 severity of MEDIUM (5.4).

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CVE-2026-63134

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.