Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in bharatkambariya Donation Block For PayPal allows Stored XSS.This issue affects Donation Block For PayPal: from n/a through 2.2.0.

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 Donation Block For PayPal WordPress plugin through 2.1.0 does not sanitise and escape form submissions, leading to a stored cross-site scripting vulnerability

The Donation Block For PayPal WordPress plugin before 2.1.0 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.