What is CVE-2026-63134?

CVE-2026-63134 is a medium-severity vulnerability in Cisagov Malcolm, classified under Path Traversal. CVSS score: 5.4/10. Published 2026-08-11.

How severe is CVE-2026-63134?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Path Traversal in Cisagov Malcolm

CVE-2026-63134

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)…

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Cisagov Malcolm — versions < 26.07.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-63134?: CVE-2026-63134 is a medium-severity vulnerability in Cisagov Malcolm, classified under Path Traversal. CVSS score: 5.4/10. Published 2026-08-11.
How severe is CVE-2026-63134?: Medium severity. CVSS v3 base score is 5.4 out of 10.