An authentication bypass vulnerability exists in multiple WSO2 products when FIDO authentication is enabled. When a user account is deleted, the system does not automatically remove associated FIDO registration data. If a new user account is later created using the same username, the system may associate the new account with the previously registered FIDO device.
This flaw may allow a previously deleted user to authenticate using their FIDO credentials and impersonate the newly created user, resulting in unauthorized access. The vulnerability applies only to deployments that utilize FIDO-based authentication.
| Software | From | Fixed in |
|---|---|---|
| wso2 / identity_server | 5.10.0 | 5.10.0.x |
| wso2 / identity_server | 5.11.0 | 5.11.0.x |
| wso2 / identity_server_as_key_manager | 5.10.0 | 5.10.0.x |
| wso2 / open_banking_iam | 2.0.0 | 2.0.0.x |