Low · published September 23, 2025
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.
| Product | Versions | Fixed in |
|---|---|---|
| wso2/identity_server | all versions | — |
| wso2/identity_server | all versions | — |
| wso2/identity_server_as_key_manager | all versions | — |
| wso2/open_banking_iam | all versions | — |