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-2026-63133
cisagov Malcolm — Malcolm has Uncontrolled Resource Consumption in Archive Extraction (Inode-Exhaustion DoS)
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N N N H 7.1 .0044 35.6 —
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-2026-63133 (cisagov Malcolm). Fixed in Malcolm 26.07.0.
Oct 2 RESCORED — CVE-2026-63133 (cisagov Malcolm). CVSS 6.5 → 7.1 (NVD).
Description
Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, `safe-extract.py` extracts uploaded archives with no limit on entry count, directory depth, total entries, or output size. A small malicious archive containing a large number of directory or file entries causes the filebeat processing container to create an unbounded number of filesystem objects, exhausting inodes or filesystem metadata and denying service to the processing pipeline and any service sharing the same mount. 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-2026-63133 (cisagov Malcolm). Fixed in Malcolm 26.07.0. |
| October 2, 2026 | RESCORED | RESCORED — CVE-2026-63133 (cisagov Malcolm). CVSS 6.5 → 7.1 (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-2026-63133 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.
