The callback URL parameter in WSO2 API Manager fails to validate user-supplied input, allowing it to be controlled by malicious actors.
Exploitation of this vulnerability could lead to users being redirected to attacker-controlled web pages. This can be used in conjunction with social engineering techniques to trick users into interacting with malicious links, potentially resulting in phishing attacks aimed at acquiring sensitive information or causing other harm.
Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3403/#solution