Critical (9.8) in roundupwp registrations for the events calendar. EPSS 7.3% chance of exploitation in the next 30 days.
The Registrations for the Events Calendar WordPress plugin before 2.7.6 does not sanitise and escape the event_id in the rtec_send_unregister_link AJAX action (available to both unauthenticated and authenticated users) before using it in a SQL statement, leading to an unauthenticated SQL injection.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
7.3% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)