CVE-2025-34073

CRITICAL EPSS 88.9%
Published Jul 2, 202512mo ago · Modified Jun 17, 20261w ago
10.0 CVSS 4.0
Critical
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Published Jul 2, 2025 12mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
10.0
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
88.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-306 Missing Authentication for Critical Function Authentication
CWE-78 OS Command Injection Injection

References 5

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.