CVE-2025-13909: Information Disclosure via Multi-Tenant Authentication Flows in WSO2 Identity Server Allows Cross-Tenant PII Exposure
The system accepts authentication requests without sufficient validation to enforce tenant isolation when using Email OTP, SMS OTP, or Magic Link as first-factor authenticators. This failure to adequately separate user data between tenants can lead to the exposure of personally identifiable information.
Successful exploitation allows an attacker to disclose personally identifiable information of users in different tenants, resulting in privacy violations and potential regulatory non-compliance. This may include unauthorized access to user details such as mobile numbers.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-13909?
The severity of CVE-2025-13909 is classified as medium with a CVSS score of 4.3.
How do I fix CVE-2025-13909?
To fix CVE-2025-13909, upgrade to the latest version of WSO2 Identity Server that addresses tenant isolation in multi-tenant authentication flows.
What type of information is at risk with CVE-2025-13909?
CVE-2025-13909 poses a risk of exposure to personally identifiable information (PII) due to inadequate validation in authentication requests.
What authentication methods are affected by CVE-2025-13909?
CVE-2025-13909 affects authentication methods using Email OTP, SMS OTP, and Magic Link as first-factor authenticators.
Which software is impacted by CVE-2025-13909?
CVE-2025-13909 impacts the WSO2 Identity Server.