{"id":"CVE-2026-63134","title":"Malcolm is a network traffic analysis tool suite","summary":"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.pathnam…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","cwe":["CWE-22"],"published":"2026-08-11","updated":"2026-09-09","sourceUpdated":"2026-09-09T20:58:37.713","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63134","references":[{"url":"https://github.com/cisagov/Malcolm/releases/tag/v26.07.0","label":"security-advisories@github.com"},{"url":"https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4","label":"security-advisories@github.com"},{"url":"https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00304,"epssPercentile":0.23338,"ingestedAt":"2026-09-09T21:22:45.530Z","slug":"CVE-2026-63134","body":"## Overview\n\nMalcolm 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}