The Redux Framework WordPress plugin before 4.5.13 does not restrict which user meta keys can be written when saving custom profile fields, allowing users with at least the Subscriber role to escalate their privileges to Administrator by submitting a crafted value while updating their own profile, on sites where the Redux Framework WordPress plugin before 4.5.13's user-profile (Users extension) feature is enabled.

The Redux Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Media field filter values in versions up to, and including, 4.5.13 This is due to insufficient input sanitization of nested array values in the usermetasave() function and unsafe output of filter CSS values in the render() function without proper escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.