Missing Authorization vulnerability in Caseproof, LLC Memberpress allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Memberpress: from n/a through 1.11.34.
The WP Guppy WordPress plugin before 1.3 does not have any authorisation in some of the REST API endpoints, allowing any user to call them and could lead to sensitive information disclosure, such as usernames and chats between users, as well as be able to send messages as an arbitrary user