CVE-2025-13736

When Multi-Attribute Login is enabled, the login interface fails to consistently mask the existence of user accounts. For valid users, the server resolves and displays their canonical username, while for non-existent users, it echoes the original input. This occurs regardless of the validate_username configuration. The discovery of valid usernames can increase the risk of brute force attacks, social engineering attacks, and targeted information leakage. Attackers can leverage this information to craft more effective phishing campaigns or social engineering tactics to compromise user accounts or extract sensitive data.

CVSS v3 3.7 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4013/	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server_as_key_manager::::::::
	cpe:2.3:a:wso2:open_banking_am::::::::
	cpe:2.3:a:wso2:open_banking_iam::::::::

History

No history.

Information

Published : 2026-08-06 08:16

Updated : 2026-08-12 19:36

NVD link : CVE-2025-13736

Mitre link : CVE-2025-13736

CVE.ORG link : CVE-2025-13736

JSON object : View

Products Affected

wso2

api_manager
open_banking_iam
identity_server_as_key_manager
identity_server
open_banking_am

CWE

CWE-203

Observable Discrepancy

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