CVE-2025-43919 | BDVDB-2026-275839 Detail

GNUMailman

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-24 Path Traversal: '../filedir'

References#

Exploit#

No public exploit known

History#

Version 12025-04-20Record published in the CVE List.
Version 22025-04-28Most recent update recorded in the CVE List.

Published

Published: 2025-04-20
Last modified: 2025-04-28

Vendor information

Vendor: GNU
Product: Mailman

All GNU vulnerabilities

Score

5.8 Medium

EPSS

1.4%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 72.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
2.1.39
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.8 Medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

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

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).