CVE-2025-34073 | An unauthenticated command injection vulnerability exists in… | CVSS 10.0 CRITICAL

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.

Metadata

CVE ID: CVE-2025-34073
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2025-04-15 19:15 UTC
Published: 2025-07-02 13:46 UTC
Last updated: 2026-05-14 02:07 UTC
Primary CWE: CWE-78
CWE-78 Improper Neutralization of Special Elements used in a…
Vendor / Product: Stamparm / Maltrail
Sources: cve.org · NVD

Severity & Metrics

10.0 CRITICAL CVSS 4.0

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Stamparm	Maltrail	—	0 ≤ 0.54

Weakness (CWE)

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

CVSS scores (1)

Score	Severity	Version	Source	Vector
10.0	CRITICAL	4.0	cna	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

References (5)