CandidATS 3.0.0 contains a cross-site scripting vulnerability via the page parameter of the ajax.php resource. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.
View the template here CVE-2022-42749.yaml
References:
https://fluidattacks.com/advisories/modestep/