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 Slider, Gallery, and Carousel by MetaSlider – Responsive WordPress Slideshows plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'metaslider' shortcode in all versions up to, and including, 3.70.0 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.

Numerous Plugins and Themes from the AccessPress Themes (aka Access Keys) vendor are backdoored due to their website being compromised. Only plugins and themes downloaded via the vendor website are affected, and those hosted on wordpress.org are not. However, all of them were updated or removed to avoid any confusion

SQL injection vulnerability in the Webesse Image Gallery (ws_gallery) extension 1.0.4 and earlier for TYPO3 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.

PHP remote file inclusion vulnerability in template.php in Geoffrey Golliher Axiom Photo/News Gallery (axiompng) 0.8.6 allows remote attackers to execute arbitrary PHP code via a URL in the baseAxiomPath parameter.