CVE-2025-34073

stamparm/maltrail <=0.54 Remote Command Execution

State: Published
Severity: 10.0 Critical
Published: Jul 2, 2025
Updated: May 14, 2026
Reserved: Apr 15, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	10.0 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	VulnCheck

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
MaltrailStamparm	0.54 and earlierAffected

References

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/http/maltrail_rce.rbexploit
https://huntr.com/bounties/be3c5204-fbd9-448d-b97c-96a8d2941e87third-party-advisoryexploit
https://github.com/stamparm/maltrailproduct
https://github.com/stamparm/maltrail/issues/19146issue-tracking
https://vulncheck.com/advisories/stamparm-maltrail-rcethird-party-advisory

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