Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-13736

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
06/08/2026
Last modified:
12/08/2026

Description

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.<br /> <br /> 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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 3.70 LOW
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x
3.70
Severity 3.x
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:* 3.1.0 (including) 3.1.0.351 (excluding)
cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:* 3.2.0 (including) 3.2.0.455 (excluding)
cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:* 4.0.0 (including) 4.0.0.375 (excluding)
cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:* 5.10.0 (including) 5.10.0.380 (excluding)
cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:* 5.11.0 (including) 5.11.0.427 (excluding)
cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:* 6.0.0 (including) 6.0.0.254 (excluding)
cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:* 6.1.0 (including) 6.1.0.255 (excluding)
cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:* 7.0.0 (including) 7.0.0.132 (excluding)
cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:* 7.1.0 (including) 7.1.0.40 (excluding)
cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:* 7.2.0 (including) 7.2.0.2 (excluding)
cpe:2.3:a:wso2:identity_server_as_key_manager:*:*:*:*:*:*:*:* 5.10.0 (including) 5.10.0.371 (excluding)
cpe:2.3:a:wso2:open_banking_am:*:*:*:*:*:*:*:* 2.0.0 (including) 2.0.0.400 (excluding)
cpe:2.3:a:wso2:open_banking_iam:*:*:*:*:*:*:*:* 2.0.0 (including) 2.0.0.420 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools