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      <title>CVE-2025-13909 — Information Disclosure via Multi-Tenant Authentication Flows in WSO2 Identity Server Allows Cross-Tenant PII Exposure</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-13909</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; WSO2 Identity Server, WSO2 Carbon Identity Application Authentication Framework, WSO2 Carbon MagicLink Authenticator Module, WSO2 Carbon Abstract OTP Authenticator, WSO2 Email OTP Authenticator&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; WSO2 Identity Server, WSO2 Carbon Identity Application Authentication Framework, WSO2 Carbon MagicLink Authenticator Module, WSO2 Carbon Abstract OTP Authenticator, WSO2 Email OTP Authenticator&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</content:encoded>
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