stamparm/maltrail <=0.54 Remote Command Execution
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass, Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306 and CWE-78.
Summary
An unauthenticated command injection vulnerability exists in stamparm/maltrail (Maltrail) versions <=0.54. A remote attacker can execute arbitrary operating system commands via the username parameter in a POST request to the /login endpoint. This occurs due to unsafe handling of user-supplied input passed to subprocess.check_output() in core/http.py, allowing injection of shell metacharacters. Exploitation does not require authentication and commands are executed with the privileges of the Maltrail process.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-34073
- 2026-10-03 Alias added: GHSA-6655-8f3g-xp52
References
More Stamparm vulnerabilities
- TI-2026-61842 stamparm maltrail Blacklist Endpoint httpd.py _blacklist missing authentication CVSS 4.0MEDIUM 6.9
Sources
- CVE-2025-34073 · CVE Program
- CVE-2025-34073 · NVD
- FIRST EPSS
- GHSA-6655-8f3g-xp52 · GitHub Advisory Database · CC BY 4.0
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