Skip to main content

Mailman CVE-2025-43919

MEDIUM
Path Traversal: '../filedir' (CWE-24)
2025-04-20 cve@mitre.org
Path Traversal Suse Mailman Gnu
5.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
CWE-24
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path traversal prevention
Impact

CVSS score of 5.8 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.22%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Mar 28, 2026

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to read arbitrary files via ../ directory traversal at /mailman/private/mailman (aka the private archive. Rated medium severity (CVSS 5.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Sign in to check
Technical ContextAI · show details

This vulnerability is classified under CWE-24. GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to read arbitrary files via ../ directory traversal at /mailman/private/mailman (aka the private archive authentication endpoint) via the username parameter. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used. Affected products include: Gnu Mailman.

Know when Mailman gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources
Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 5.8 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
SUSE MEDIUM

Primary rating from NVD.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

3
Patch released
Apr 06, 2026 - 08:30 nvd
Patch available
PoC Detected
Apr 28, 2025 - 14:15 vuln.today
Public exploit code
CVE Published
Apr 20, 2025 - 01:15 nvd
MEDIUM 5.8

DescriptionCVE.org

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to read arbitrary files via ../ directory traversal at /mailman/private/mailman (aka the private archive authentication endpoint) via the username parameter. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.

Executive ViewAI

Why It Matters

CVE-2025-43919 presents moderate security risk rated CVSS 5.8. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.

Threat Intelligence Overview

EPSS Score
0.2%
Top 55% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium
NVD CVE.org EPSS Vendor GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Low

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +29
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Path Traversal HIGH

Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.

Affected Products (CPE)CVE.org

cpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:*

More in Mailman

View all
CVE-2015-2775 HIGH POC
7.6 Apr 13

Directory traversal vulnerability in GNU Mailman before 2.1.20, when not using a static alias, allows remote attackers t
CVE-2020-12108 MEDIUM POC
6.5 May 06

/options/mailman in GNU Mailman before 2.1.31 allows Arbitrary Content Injection. Rated medium severity (CVSS 6.5), this
CVE-2018-5950 MEDIUM POC
6.1 Jan 23

Cross-site scripting (XSS) vulnerability in the web UI in Mailman before 2.1.26 allows remote attackers to inject arbitr
CVE-2025-43920 MEDIUM POC
5.4 Apr 20

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), in certain external archiver configurations, allows unauthenticated

CVE-2025-43921 MEDIUM POC
5.3 Apr 20

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to create lists via the /mailman/cr
CVE-2016-6893 HIGH
8.8 Sep 02

Cross-site request forgery (CSRF) vulnerability in the user options page in GNU Mailman 2.1.x before 2.1.23 allows remot
CVE-2016-7123 HIGH
8.8 Sep 02

Cross-site request forgery (CSRF) vulnerability in the admin web interface in GNU Mailman before 2.1.15 allows remote at
CVE-2021-44227 HIGH
8.8 Dec 02

In GNU Mailman before 2.1.38, a list member or moderator can get a CSRF token and craft an admin request (using that tok
CVE-2021-42097 HIGH
8.0 Oct 21

GNU Mailman before 2.1.35 may allow remote Privilege Escalation. Rated high severity (CVSS 8.0), this vulnerability is r
CVE-2021-43332 MEDIUM
6.5 Nov 12

In GNU Mailman before 2.1.36, the CSRF token for the Cgi/admindb.py admindb page contains an encrypted version of the li
CVE-2018-13796 MEDIUM
6.5 Jul 12

An issue was discovered in GNU Mailman before 2.1.28. Rated medium severity (CVSS 6.5), this vulnerability is remotely e
CVE-2021-43331 MEDIUM
6.1 Nov 12

In GNU Mailman before 2.1.36, a crafted URL to the Cgi/options.py user options page can execute arbitrary JavaScript for

Same weakness CWE-24 – Path Traversal: '../filedir'

View all
CVE-2026-39813 CRITICAL POC
9.8
CVE-2023-7134 CRITICAL POC
9.8
CVE-2023-3057 CRITICAL POC
9.8
CVE-2023-3056 CRITICAL POC
9.8
CVE-2023-1800 CRITICAL POC
9.8
CVE-2025-61318 CRITICAL POC
9.1
CVE-2023-6900 CRITICAL POC
9.1
CVE-2025-53513 HIGH POC
8.8

Same technique Path Traversal

View all
CVE-2019-19781 CRITICAL POC
9.8
CVE-2021-21972 CRITICAL POC
9.8
CVE-2021-40444 HIGH POC
8.8
CVE-2022-41352 CRITICAL POC
9.8
CVE-2021-27065 HIGH POC
7.8
CVE-2018-20250 HIGH POC
7.8
CVE-2022-37042 CRITICAL POC
9.8
CVE-2025-64446 CRITICAL POC
9.8

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise Server 12 SP5 Fixed
SUSE Linux Enterprise Server 12 SP5-LTSS Fixed
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security Fixed
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 Fixed
SUSE Linux Enterprise Point of Sale 11 SP3 Fixed

References

Advisories & patches
REF https://code.launchpad.net/~mailman-coders/mailman/2.1 REF https://github.com/cpanel/mailman2-python3 REF https://www.openwall.com/lists/oss-security/2025/04/21/6

Search Externally

GitHub PoC Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy