The Community by PeepSo – Social Network, Membership, Registration, User Profiles plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 6.4.5.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
https://www.peepso.com/changelog/
https://www.peepso.com/6-4-6-0/
https://wordpress.org/plugins/peepso-core/#developers