A username enumeration vulnerability exists in multiple WSO2 products when Multi-Attribute Login is enabled. In this configuration, the system returns a distinct "User does not exist" error message to the login form, regardless of the validate_username setting. This behavior allows malicious actors to determine which usernames exist in the system based on observable discrepancies in the application's responses. Exploitation of this vulnerability could aid in brute-force attacks, targeted phishing campaigns, or other social engineering techniques by confirming the validity of user identifiers within the system.
History

Tue, 30 Sep 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 29 Sep 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Wso2
Wso2 identity Server
Wso2 identity Server As Key Manager
Wso2 open Banking Iam
Vendors & Products Wso2
Wso2 identity Server
Wso2 identity Server As Key Manager
Wso2 open Banking Iam

Fri, 26 Sep 2025 08:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-203

Fri, 26 Sep 2025 08:00:00 +0000

Type Values Removed Values Added
Description A username enumeration vulnerability exists in multiple WSO2 products when Multi-Attribute Login is enabled. In this configuration, the system returns a distinct "User does not exist" error message to the login form, regardless of the validate_username setting. This behavior allows malicious actors to determine which usernames exist in the system based on observable discrepancies in the application's responses. Exploitation of this vulnerability could aid in brute-force attacks, targeted phishing campaigns, or other social engineering techniques by confirming the validity of user identifiers within the system.
Title Username Enumeration in Multiple WSO2 Products with Multi-Attribute Login Enabled
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: WSO2

Published: 2025-09-26T07:52:52.297Z

Updated: 2025-09-30T15:43:31.106Z

Reserved: 2025-02-17T14:17:42.038Z

Link: CVE-2025-1396

cve-icon Vulnrichment

Updated: 2025-09-30T15:43:28.310Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-26T08:15:38.040

Modified: 2025-09-26T14:32:19.853

Link: CVE-2025-1396

cve-icon Redhat

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