Description
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.
Published: 2026-08-06
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4731/#solution

Tracking

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Advisories

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History

Thu, 06 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 06 Aug 2026 08:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Information Disclosure via Multi-Tenant Authentication Flows in WSO2 Identity Server Allows Cross-Tenant PII Exposure
First Time appeared Wso2
Wso2 email Otp Authenticator
Wso2 wso2 Carbon Abstract Otp Authenticator
Wso2 wso2 Carbon Identity Application Authentication Framework
Wso2 wso2 Carbon Magiclink Authenticator Module
Wso2 wso2 Identity Server
Weaknesses CWE-20
CWE-200
CPEs cpe:2.3:a:wso2:email_otp_authenticator:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_carbon_abstract_otp_authenticator:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_carbon_identity_application_authentication_framework:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_carbon_magiclink_authenticator_module:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:*
Vendors & Products Wso2
Wso2 email Otp Authenticator
Wso2 wso2 Carbon Abstract Otp Authenticator
Wso2 wso2 Carbon Identity Application Authentication Framework
Wso2 wso2 Carbon Magiclink Authenticator Module
Wso2 wso2 Identity Server
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Subscriptions

Wso2 Email Otp Authenticator Wso2 Carbon Abstract Otp Authenticator Wso2 Carbon Identity Application Authentication Framework Wso2 Carbon Magiclink Authenticator Module Wso2 Identity Server
cve-icon MITRE

Status: PUBLISHED

Assigner: WSO2

Published:

Updated: 2026-08-06T12:33:19.505Z

Reserved: 2025-12-02T16:51:30.837Z

Link: CVE-2025-13909

cve-icon Vulnrichment

Updated: 2026-08-06T12:33:16.118Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-06T10:00:05Z

Weaknesses