SecuriTricks - CVE-2025-43921

Description

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to create lists via the /mailman/create endpoint.

Product(s) Impacted

Vendor	Product	Versions
Gnu	Mailman	2.1.39
Cpanel	Cpanel Whm	* *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-863

Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	gnu	mailman	2.1.39	/	/	/	/	/	/	/
a	cpanel	cpanel	/	/	/	/	/	/	/	/
a	cpanel	whm	/	/	/	/	/	/	/	/

References

https://code.launchpad.net/~mailman-coders/mailman/2.1

https://github.com/0NYX-MY7H/CVE-2025-43921

CVSS Score

5.3 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: UNCHANGED
Confidentiality Impact: NONE
Integrity Impact: LOW
Availability Impact: NONE

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

View Vector String

Timeline

Published: April 20, 2025, 1:15 a.m.
Last Modified: April 20, 2025, 1:15 a.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

cve@mitre.org

CVE-2025-43921