CVE-2025-43921

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to create lists via the /mailman/create endpoint. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://code.launchpad.net/~mailman-coders/mailman/2.1	Product
https://github.com/0NYX-MY7H/CVE-2025-43921	Exploit Third Party Advisory
https://github.com/cpanel/mailman2-python3
https://www.openwall.com/lists/oss-security/2025/04/21/6

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2025-04-20 01:15

Updated : 2025-04-28 14:15

NVD link : CVE-2025-43921

Mitre link : CVE-2025-43921

CVE.ORG link : CVE-2025-43921

JSON object : View

Products Affected

gnu

mailman

CWE

CWE-863

Incorrect Authorization

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