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 sendi…
Published: 2026-03-13 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7