The Real Cookie Banner: GDPR & ePrivacy Cookie Consent WordPress plugin before 5.1.6, real-cookie-banner-pro WordPress plugin before 5.1.6 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
CWE-79