CVE-2025-1396

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.

CVSS v3.1 Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-203 CWE-203

Affected Products

Vendor	Product	Versions
wso2	identity_server	All
wso2	identity_server	All
wso2	identity_server	All
wso2	identity_server	All
wso2	identity_server_as_key_manager	All
wso2	open_banking_iam	All

References

Advisories & Patches

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2025/WSO2-2025-3983/

Frequently Asked Questions

What is CVE-2025-1396? +

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. It has a CVSS v3.1 base score of 3.7 (LOW).

How severe is CVE-2025-1396? +

CVE-2025-1396 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-1396? +

CVE-2025-1396 affects products from wso2, specifically: identity_server, identity_server_as_key_manager, open_banking_iam. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-1396? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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