CVE-2026-63134

Published: Aug 11, 2026Modified: Sep 9, 2026

5.4

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Exploitability: 2.8 / Impact: 2.5

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (3)

https://github.com/cisagov/Malcolm/releases/tag/v26.07.0

Source: security-advisories@github.com

https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4

Source: security-advisories@github.com

https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

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