The Accordion Slider Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'accordion_slider' shortcode in all versions up to, and including, 1.5.1 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.

Missing Authorization vulnerability in bqworks Accordion Slider allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Accordion Slider: from n/a through 1.9.6.

Missing Authorization vulnerability in WP OnlineSupport, Essential Plugin Accordion and Accordion Slider allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Accordion and Accordion Slider: from n/a through 1.2.4.

Multiple plugins for WordPress are vulnerable to Stored Cross-Site Scripting via the plugin's bundled FancyBox JavaScript library (versions 1.3.4 to 3.5.7) in various versions 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.

The Accordion Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘html’ attribute of an accordion slider in all versions up to, and including, 1.9.11 due to insufficient input sanitization and output escaping. 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. NOTE: Successful exploitation by Contributor-level users requires an Administrator-level user to provide access to the plugin's admin area via the `Access` plugin setting, which is restricted to administrators by default.

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.