NEX-Forms – Ultimate Forms Plugin for WordPress <= 9.1.9 - Missing Authorization to Unauthenticated Arbitrary Form Entry Modification via nf_set_entry_update_id

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 9.1.9 via the submit_nex_form() function due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to to overwrite arbitrary form entries via the 'nf_set_entry_update_id' parameter.