CVE-2026-63134

Published: Aug 11, 2026Modified: Oct 24, 2026

5.3

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: ics-cert@hq.dhs.gov (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 (5)

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-230-01.json

Source: ics-cert@hq.dhs.gov

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

Source: ics-cert@hq.dhs.gov

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

Source: ics-cert@hq.dhs.gov

https://www.cisa.gov/news-events/ics-advisories/icsa-26-230-01

Source: ics-cert@hq.dhs.gov

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

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

Timeline

No history available yet.