Description

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

Remediation

References

CVE-2025-43921

Related Vulnerabilities

Oracle Database Server Other Vulnerability (CVE-2007-3856)

Apache HTTP Server Use of Uninitialized Resource Vulnerability (CVE-2020-1934)

WebLogic Deserialization of Untrusted Data Vulnerability (CVE-2018-3245)

IBM RTC Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2019-4747)

PHP Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2010-2531)

Severity

Medium

Classification

CVE-2025-43921 CWE-863 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Tags

Missing Update Known Vulnerabilities