# CVE-2025-34073

## Summary

- **CVE ID:** CVE-2025-34073
- **Severity:** CRITICAL
- **CVSS Score:** 10 (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)
- **CWE:** CWE-78, CWE-306
- **Published:** Jul 2, 2025
- **Last Modified:** May 14, 2026

## 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 (0)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 5.67%
- **EPSS Percentile:** 92.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._