WordPress Ninja Forms plugin before 3.4.34 contains an open redirect vulnerability via the wp_ajax_nf_oauth_connect AJAX action, due to the use of a user-supplied redirect parameter and no protection in place. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
View the template here CVE-2021-24165.yaml
References:
https://github.com/ARPSyndicate/cvemon