The product fails to sufficiently validate callback URLs, allowing them to be manipulated with malicious payloads when…

The product fails to sufficiently validate callback URLs, allowing them to be manipulated with malicious payloads when processed through a weak regular expression or when validation is omitted.

An attacker can exploit this by crafting a link that appears legitimate but redirects users to an attacker-controlled page. This redirection facilitates phishing attacks, enabling the harvesting of sensitive user information, potentially leading to unauthorized access or data theft.