WP OAuth Server by Justin Greer <= 4.2.1 - Admin+ Stored XSS
LANACOMMONVDB ID: 39b57ca4-c960-4f04-93b6-caa61f700ac2
The plugin does not sanitize and escape client ids, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting (XSS) attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).