The UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.2.63 via the 'user_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with editor-level access and above, to reset and permanently delete the avatar or banner image of any arbitrary user, including administrators, by clearing their avatar_thumb or banner_thumb metadata in the uwp_usermeta table.
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.63/includes/class-userswp.php#L574
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.63/includes/class-profile.php#L1739
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.63/includes/class-forms.php#L89
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.63/includes/class-forms.php#L389
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.63/includes/class-forms.php#L371
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.61/includes/class-userswp.php#L574
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.61/includes/class-profile.php#L1739
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.61/includes/class-forms.php#L89
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.61/includes/class-forms.php#L389
https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.61/includes/class-forms.php#L371
https://github.com/AyeCode/userswp/commit/0e69f967578904cc26fadd0206270d50b7420298