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.
CVE-2025-34073
This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 3.9%, top 11% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Public exploit code is available (Metasploit, ssvc poc, public exploit)
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 10.0
- EG Score
- 10.0(medium)
- EG Risk
- 86(Attend)EG Risk 86/100SSVC: Attend
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity100% × 45%Exploitation65% × 40%Automatability100% × 15%Action: Remediate soon — notable exploitation risk. - EPSS PROB
- 4%
- EPSS %ILE
- 89%
- KEV
- Not listed
Published
July 2, 2025
Last Modified
April 15, 2026
Advisory Details (5)
Auto-updated Jul 25, 2026Maltrail <=0.54 Remote Command Execution | Advisories | VulnCheck
https://vulncheck.com/advisories/stamparm-maltrail-rcehuntr - The world's first bug bounty platform for AI/ML
https://huntr.com/bounties/be3c5204-fbd9-448d-b97c-96a8d2941e87Create SECURITY.md · Issue #19146 · stamparm/maltrail · GitHub
https://github.com/stamparm/maltrail/issues/19146GitHub - stamparm/maltrail: Malicious traffic detection system · GitHub
https://github.com/stamparm/maltrailWeakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 115 total refreshes for this CVE.
- 2026-07-26 14:54 UTCEPSS rescore
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- 2026-07-23 02:54 UTCEG score recompute
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- 2026-06-08 16:02 UTCEG score recompute▲ 10.00
- 2026-06-08 16:02 UTCGHSA enrichment
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Publicly available exploits
(2 references)Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Nucleihttp/cves/2025/CVE-2025-34073.yamlFirst seen Jan 1, 2025
Maltrail <=0.54 Username Parameter - Remote Command Execution
Open source ↗ - Metasploitexploit/unix/http/maltrail_rce✓ verifiedFirst seen Jul 31, 2023
Maltrail Unauthenticated Command Injection
Open source ↗
Related CVEs(same CWE)
Same CWE
10 shownCWE-78 · CWE-306
- CVE-2009-20011EG 10.0CRITICAL
- CVE-2011-10017EG 10.0CRITICAL
- CVE-2011-10013EG 10.0CRITICAL
- CVE-2010-5326EG 10.0 KEVEPSS p97CRITICAL
- CVE-2011-4502EG 10.0EPSS p92HIGH
- CVE-2011-2148EG 10.0EPSS p92HIGH
- CVE-2011-0382EG 10.0EPSS p90HIGH
- CVE-2011-0381EG 10.0EPSS p92HIGH
- CVE-2011-0372EG 10.0HIGH
- CVE-2011-0271EG 10.0EPSS p94HIGH
Frequently asked(5)
What is CVE-2025-34073?
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What is the CVSS score of CVE-2025-34073?
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Dependency Blast Radius
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