Password Protected < 2.8.4 - Unauthenticated Sensitive Information Exposure via REST API

The Password Protected — Lock Entire Site, Pages, Posts, Categories, and Partial Content WordPress plugin before 2.8.4 does not restrict REST API access to authenticated users when a specific option is enabled, allowing unauthenticated visitors to bypass the sitewide password gate and read otherwise-protected content and account identifiers via the REST API. This re-introduces a previously-fixed issue (CVE-2024-0437), which was patched in 2.6.7 and regressed in 2.6.8.