GNU Mailman 2.1.39 Private Archive Authentication Endpoint /Mailman/private/Mailman Username path traversal

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in GNU Mailman 2.1.39. Affected is an unknown function of the file /Mailman/private/Mailman of the component Private Archive Authentication Endpoint. Such manipulation of the argument Username leads to path traversal. This vulnerability is traded as CVE-2025-43919. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in GNU Mailman 2.1.39 and classified as problematic. Affected by this issue is an unknown code block of the file /Mailman/private/Mailman of the component Private Archive Authentication Endpoint. The manipulation of the argument username with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-24. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "../" sequences that can resolve to a location that is outside of that directory. Impacted is confidentiality. CVE summarizes:

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.

The advisory is shared for download at code.launchpad.net. This vulnerability is handled as CVE-2025-43919 since 04/19/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability scanner Nessus provides a plugin with the ID 264380 (Linux Distros Unpatched Vulnerability : CVE-2025-43919), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (264380) and EUVD (EUVD-2025-12592). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.8
CNA Vector (MITRE): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-24 / CWE-23 / CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 264380
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-43919

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/19/2025 🔍
04/20/2025 +1 days 🔍
04/20/2025 +0 days 🔍
09/11/2025 +144 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: code.launchpad.net
Status: Confirmed

CVE: CVE-2025-43919 (🔍)
GCVE (CVE): GCVE-0-2025-43919
GCVE (VulDB): GCVE-100-305744
EUVD: 🔍

Entryinfo

Created: 04/20/2025 12:15
Updated: 09/11/2025 09:01
Changes: 04/20/2025 12:15 (64), 04/28/2025 17:13 (12), 05/25/2025 23:03 (1), 09/11/2025 09:01 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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