EPSS
Percentile
26.1%
The onesignal-free-web-push-notifications plugin before 1.17.8 for WordPress has XSS via the subdomain parameter.
wordpress.org/plugins/onesignal-free-web-push-notifications/#developers
wpvulndb.com/vulnerabilities/9478
www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5530.php