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CVE-2025-13909

Information Disclosure via Multi-Tenant Authentication Flows in WSO2 Identity Server Allows Cross-Tenant PII Exposure

Published: Aug 6, 2026Updated: Aug 6, 2026 Sources: CVE List NVDCWE-20
4.3MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 89.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-20CWE-200

Affected Products

WSO2
commercial·IN
WSO2 Identity ServerSaaSSecurity Product
Security Products / identity-access-mgmt
WSO2 Carbon Identity Application Authentication FrameworkOn-premWeb App
Cloud & SaaS
WSO2 Carbon MagicLink Authenticator Module
Security Products / identity-access-mgmt
WSO2 Carbon Abstract OTP AuthenticatorOn-prem
Cloud & SaaS / api-gateway
Email OTP AuthenticatorOn-premSecurity Product
Security Products / identity-access-mgmt

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Initial Access
View detailed technique mapping

References

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4731/
security.docs.wso2.com

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