Without origin verification, the target website cannot distinguish between legitimate requests from its own pages and malicious requests from an
attacker’s site. The attacker can craft a malicious website or script that sends requests to a target website where the user is already
authenticated.
This vulnerability class is not about a single specific user input or action, but rather a series of actions that lead to an insecure cross-origin
communication.
What is the potential impact?
The absence of origin verification during cross-origin communications can lead to serious security issues.
Data Breach
If an attacker can successfully exploit this vulnerability, they may gain unauthorized access to sensitive data. For instance, a user’s personal
information, financial details, or other confidential data could be exposed. This not only compromises the user’s privacy but can also lead to
identity theft or financial loss.
Unauthorized Actions
An attacker could manipulate the communication between websites to perform actions on behalf of the user without their knowledge. This could range
from making unauthorized purchases to changing user settings or even deleting accounts.
