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TI-2026-61480 Aliases CVE-2026-90444GHSA-3mw7-4727-j55f

OS Command Injection in Malcolm

Priority LOW 39CWE-78Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

A file-transfer interface that requires valid credentials accepts attacker-controlled filenames without restricting shell metacharacters. An automated process later constructs and runs a system command using the uploaded file's name, allowing an authenticated attacker to embed and execute arbitrary operating system commands with the privileges of that process. This allows an attacker to read and modify ingested log data, and could provide a foothold for further movement within the internal network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00305 23rd percentileScored 2026-11-07
Fix Fixed Malcolm (CISA): v26.06.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
CISAMalcolmbefore v26.06.0v26.06.0Patch availableCNA
  • Malcolm VendorCISA Affected before v26.06.0 Fixed in v26.06.0 Patch available CNA

Remediation

  • Fix · CNA Malcolm (CISA) Fixed in v26.06.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    CISA Malcolm — raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/O…

    15 records Highest priority Priority MEDIUM 1 MEDIUM, 14 LOW

    Other records, highest priority first

    • TI-2026-61492 Use of default credentials in MalcolmPriority MEDIUM 47
    • TI-2026-61485 Missing Authentication for Critical Function in MalcolmPriority LOW 36
    • TI-2026-61487 Use of Default Credentials in MalcolmPriority LOW 35
    Show all 15 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-90444
  2. 2026-10-03 Alias added: GHSA-3mw7-4727-j55f
  3. 2026-10-04 Priority changed: MEDIUM → LOW

References

Advisory 1

Other 1

  • TI-2026-69642 Server-side request forgery in Malcolm file upload component CVSS 3.1HIGH 7.1
  • TI-2026-69640 Cross-Site Request Forgery in Malcolm CVSS 3.1HIGH 7.1
  • TI-2026-69638 Compressed file uploads in Malcolm can exhaust shared disk space CVSS 3.1MEDIUM 6.5
  • TI-2026-69637 Incorrect authorization in Malcolm exposes role-restricted paths CVSS 3.1MEDIUM 5.4
  • TI-2025-24590 CISA Thorium download stream divide by zero CVSS 4.0MEDIUM 5.3
  • TI-2025-24585 CISA Thorium insecure downloaded file path validation CVSS 4.0MEDIUM 5.3
See all 33 →

Sources

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