What’s Vulnerable › Vulnerabilities

CVE-2025-34073: stamparm/maltrail <=0.54 Remote Command Execution

• Severity: critical (CVSS 10.0 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-07-02 · updated 2026-06-17
• Weakness: CWE-78

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.

Affected products

• stamparm maltrail: through 0.54

References

• https://github.com/stamparm/maltrail
• https://github.com/stamparm/maltrail/issues/19146
• https://huntr.com/bounties/be3c5204-fbd9-448d-b97c-96a8d2941e87
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/http/maltrail_rce.rb
• https://vulncheck.com/advisories/stamparm-maltrail-rce

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