CVE-2026-22216 wpDiscuz before 7.6.47 - No Rate Limiting on Subscription Endpoints with LIKE Wildcard Bypass

wpDiscuz before 7.6.47 contains a missing rate limiting vulnerability that allows unauthenticated attackers to subscribe arbitrary email addresses to post notifications by sending POST requests to the wpdAddSubscription handler in class.WpdiscuzHelperAjax.php. Attackers can exploit LIKE wildcard...