myCred <= 2.7.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via mycred_link Shortcode

The myCred – Loyalty Points and Rewards plugin for WordPress and WooCommerce – Give Points, Ranks, Badges, Cashback, WooCommerce rewards, and WooCommerce credits for Gamification plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's mycred_link shortcode in all versions up to, and including, 2.7.4 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.