Affected: WSO2 Identity Server, WSO2 API Manager, WSO2 Identity Server as Key Manager, WSO2 Open Banking AM, WSO2 Open Banking IAM, WSO2 Carbon Identity Application Authentication Endpoint(Utils)

An open redirection vulnerability exists in multiple WSO2 products due to improper validation of the multi-option URL in the authentication endpoint when multi-option authentication is enabled. A malicious actor can craft a valid link that redirects users to an attacker-controlled site.

By exploiting this vulnerability, an attacker may trick users into visiting a malicious page, enabling phishing attacks to harvest sensitive information or perform other harmful actions.