The ArtPlacer Widget WordPress plugin before 2.21.2 does not have CSRF check in some places, and is missing sanitisation as well as escaping, which could allow attackers to make logged in admin add Stored XSS payloads via a CSRF attack
The ArtPlacer Widget WordPress plugin before 2.21.2 does not have authorisation check in place when deleting widgets, allowing ay authenticated users, such as subscriber, to delete arbitrary widgets
The ArtPlacer Widget WordPress plugin before 2.20.7 does not sanitize and escape the "id" parameter before submitting the query, leading to a SQLI exploitable by editors and above. Note: Due to the lack of CSRF check, the issue could also be exploited via a CSRF against a logged editor (or above)