Description
wpDiscuz before 7.6.47 contains an unauthenticated denial of service vulnerability that allows anonymous users to trigger mass notification emails by exploiting the checkNotificationType() function. Attackers can repeatedly call the wpdiscuz-ajax.php endpoint with arbitrary postId and comment_id parameters to flood subscribers with notifications, as the handler lacks nonce verification, authentication checks, and rate limiting.
Problem types
Product status
Any version before 7.6.47
7.6.47
Credits
Scott Moore - VulnCheck
References
wordpress.org/plugins/wpdiscuz/ (wpDiscuz Changelog)
wordpress.org/plugins/wpdiscuz/ (wpDiscuz)
www.vulncheck.com/...tion-flood-via-wpdchecknotificationtype (VulnCheck Advisory: wpDiscuz before 7.6.47 - Unauthenticated Email Notification Flood via wpdCheckNotificationType)