Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-63134
cisagov Malcolm — Malcolm's Path Traversal in Archive Extraction Allows Arbitrary Directory Creation
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N N L L 5.3 .0037 28.8 —
AFFECTED
Product Versions Fixed
Malcolm < 26.07.0 – 26.07.0
TIMELINE
Jul 15 Reserved by GitHub_M
Aug 11 Published (CNA: GitHub_M)
Oct 2 PATCH SHIPPED — CVE-2026-63134 (cisagov Malcolm). Fixed in Malcolm 26.07.0.
Oct 2 RESCORED — CVE-2026-63134 (cisagov Malcolm). CVSS 5.4 → 5.3 (NVD).
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.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| July 15, 2026 | Reserved | Reserved by GitHub_M |
| August 11, 2026 | Published | Published (CNA: GitHub_M) |
| October 2, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-63134 (cisagov Malcolm). Fixed in Malcolm 26.07.0. |
| October 2, 2026 | RESCORED | RESCORED — CVE-2026-63134 (cisagov Malcolm). CVSS 5.4 → 5.3 (NVD). |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| cisagov | Malcolm | — | < 26.07.0 | 26.07.0 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-63134 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
