---
id: CVE-2026-63133
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` extracts uploaded archives with no limit on entry count,
  directory depth, total entries, or output size. A small malicious archive
  containing a…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
published: '2026-08-11'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:46:28.353'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63133'
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-c35g-mgc3-95rx'
    label: security-advisories@github.com
  - url: 'https://github.com/cisagov/Malcolm/security/advisories/GHSA-c35g-mgc3-95rx'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00314
epssPercentile: 0.24558
ingestedAt: '2026-09-09T21:22:45.530Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.