The WP Datepicker plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'wpdp_get_selected_datepicker' parameter in all versions up to, and including, 2.1.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Missing Authorization vulnerability in Fahad Mahmood WP Datepicker allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects WP Datepicker: from n/a through 2.1.1.

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.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Fahad Mahmood WP Datepicker allows Stored XSS.This issue affects WP Datepicker: from n/a through 2.1.1.

The WP Datepicker plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the wpdp_add_new_datepicker_ajax() function in all versions up to, and including, 2.1.0. This makes it possible for authenticated attackers, with subscriber-level access and above, to update arbitrary options that can be used for privilege escalation. This was partially patched in 2.0.9 and 2.1.0, and fully patched in 2.1.1.