The Cryptocurrency Widgets Pack WordPress plugin before 2.0 does not sanitise and escape some parameter before using it in a SQL statement via an AJAX action available to unauthenticated users, leading to a SQL injection.
The “Image Hover Effects – Elementor Addon” WordPress Plugin before 1.3.4 has a widget that is vulnerable to stored Cross-Site Scripting (XSS) by lower-privileged users such as contributors, all via a similar method.