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TI-2026-45069 Aliases CVE-2026-63133

Malcolm has Uncontrolled Resource Consumption in Archive Extraction (Inode-Exhaustion DoS)

Priority MEDIUM 64CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-770.

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 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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00548 46th percentileScored 2026-11-07
Fix Fixed Malcolm (cisagov): 26.07.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
cisagovMalcolmbefore 26.07.026.07.0Patch availableCNA
  • Malcolm Vendorcisagov Affected before 26.07.0 Fixed in 26.07.0 Patch available CNA

Remediation

  • Fix · CNA Malcolm (cisagov) Fixed in 26.07.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-63133

References

Other 4

  • TI-2026-15970 Improper handling of highly compressed data (data amplification) in CISA Malcolm CVSS 4.0HIGH 7.1
  • TI-2026-45070 Malcolm's Path Traversal in Archive Extraction Allows Arbitrary Directory Creation CVSS 4.0MEDIUM 5.3
  • TI-2026-15969 Incorrect Authorization in CISA Malcolm CVSS 4.0MEDIUM 5.3
  • TI-2026-40197 Malcolm vulnerable to RCE via unrestricted .php upload to the file-upload component CVSS 4.0HIGH 8.7
  • TI-2026-45083 Malcolm Vulnerable to Authorization Bypass via URI Normalization Differential in Nginx Lua RBAC CVSS 4.0HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences