The Lock User Account plugin for WordPress is vulnerable to user lock bypass in all versions up to, and including, 1.0.5. This is due to permitting application password logins when user accounts are locked. This makes it possible for authenticated attackers, with existing application passwords, to interact with the vulnerable site via an API such as XML-RPC or REST despite their account being locked.

The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

The Lock User Account WordPress plugin through 1.0.3 does not have CSRF check when bulk locking and unlocking accounts, which could allow attackers to make logged in admins lock and unlock arbitrary users via a CSRF attack