CVE-2025-13736

Summary

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.

Affected Software

VendorProductVersion RangeStatus
WSO2WSO2 Identity Server as Key Manager0 < 5.10.0unknown
WSO2WSO2 Identity Server as Key Manager5.10.0 < 5.10.0.371affected
WSO2WSO2 Identity Server0 < 5.10.0unknown
WSO2WSO2 Identity Server5.10.0 < 5.10.0.380affected
WSO2WSO2 Identity Server5.11.0 < 5.11.0.427affected
WSO2WSO2 Identity Server6.0.0 < 6.0.0.254affected
WSO2WSO2 Identity Server6.1.0 < 6.1.0.255affected
WSO2WSO2 Identity Server7.0.0 < 7.0.0.132affected
WSO2WSO2 Identity Server7.1.0 < 7.1.0.40affected
WSO2WSO2 Identity Server7.2.0 < 7.2.0.2affected
WSO2WSO2 Open Banking AM0 < 2.0.0unknown
WSO2WSO2 Open Banking AM2.0.0 < 2.0.0.400affected
WSO2WSO2 API Manager0 < 3.1.0unknown
WSO2WSO2 API Manager3.1.0 < 3.1.0.351affected
WSO2WSO2 API Manager3.2.0 < 3.2.0.455affected
WSO2WSO2 API Manager4.0.0 < 4.0.0.375affected
WSO2WSO2 Open Banking IAM0 < 2.0.0unknown
WSO2WSO2 Open Banking IAM2.0.0 < 2.0.0.420affected

Weaknesses

  • CWE-203: CWE-203: Information Disclosure Through Error Messages

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References