CVE-2026-109328 Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration Name

Admidio 5.0.0 before 5.0.15 contains an unauthenticated stored cross-site scripting vulnerability in RegistrationPresenter.php, which inserts the raw FIRSTNAME registration value into an unencoded data-message attribute. Attackers can register with a double-quoted event handler that executes...