📄 cPanel / WHM Authentication Bypass / CRLF Injection

A critical authentication bypass vulnerability exists in the cPanel/WHM cpsrvd daemon due to improper neutralization of line delimiters CRLF in the whostmgrsession cookie and Authorization headers. An unauthenticated remote attacker can leverage this flaw to inject malicious session parameters...

CVE-2025-43920

GNU Mailman 2.1.39, as bundled in cPanel and WHM, in certain external archiver configurations, allows unauthenticated attackers to execute arbitrary OS commands via shell metacharacters in an email Subject line. NOTE: multiple third parties report that they are unable to reproduce this, regardles...