Vulnerability Details CVE-2026-22216
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 characters in the subscription query to match multiple email addresses and generate unwanted notification emails to victim accounts.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.6%
CVSS Severity
CVSS v3 Score 6.5