CVE-2025-5802

Summary

The self-registration flow accepts user-supplied input for usernames without adequately preventing the disclosure of username existence. When a user attempts to register with an existing username, the system responds with an error message that explicitly indicates the username is already in use.

This behavior allows an attacker to discover valid usernames within the system. The discovery of valid usernames can facilitate subsequent attacks such as brute force, social engineering, and targeted phishing campaigns.

Affected Software

VendorProductVersion RangeStatus
WSO2WSO2 API Manager0 < 3.1.0unknown
WSO2WSO2 API Manager3.1.0 < 3.1.0.354affected
WSO2WSO2 API Manager3.2.0 < 3.2.0.458affected
WSO2WSO2 API Manager3.2.0 < 3.2.0.478affected
WSO2WSO2 API Manager3.2.1 < 3.2.1.96affected
WSO2WSO2 API Manager4.0.0 < 4.0.0.379affected
WSO2WSO2 API Manager4.1.0 < 4.1.0.262affected
WSO2WSO2 API Manager4.2.0 < 4.2.0.200affected
WSO2WSO2 API Manager4.3.0 < 4.3.0.112affected
WSO2WSO2 API Manager4.4.0 < 4.4.0.72affected
WSO2WSO2 API Manager4.5.0 < 4.5.0.55affected
WSO2WSO2 API Manager4.6.0 < 4.6.0.17affected
WSO2WSO2 API Control Plane0 < 4.5.0unknown
WSO2WSO2 API Control Plane4.5.0 < 4.5.0.56affected
WSO2WSO2 API Control Plane4.6.0 < 4.6.0.18affected
WSO2WSO2 Universal Gateway0 < 4.5.0unknown
WSO2WSO2 Universal Gateway4.5.0 < 4.5.0.55affected
WSO2WSO2 Universal Gateway4.6.0 < 4.6.0.17affected
WSO2WSO2 Traffic Manager0 < 4.5.0unknown
WSO2WSO2 Traffic Manager4.5.0 < 4.5.0.54affected
WSO2WSO2 Traffic Manager4.6.0 < 4.6.0.17affected
WSO2WSO2 Identity Server0 < 5.10.0unknown
WSO2WSO2 Identity Server5.10.0 < 5.10.0.383affected
WSO2WSO2 Identity Server5.11.0 < 5.11.0.430affected
WSO2WSO2 Identity Server6.0.0 < 6.0.0.257affected
WSO2WSO2 Identity Server6.1.0 < 6.1.0.234affected
WSO2WSO2 Identity Server6.1.0 < 6.1.0.257affected
WSO2WSO2 Identity Server7.0.0 < 7.0.0.133affected
WSO2WSO2 Identity Server7.1.0 < 7.1.0.41affected
WSO2WSO2 Identity Server7.2.0 < 7.2.0.3affected
WSO2WSO2 Identity Server as Key Manager0 < 5.10.0unknown
WSO2WSO2 Identity Server as Key Manager5.10.0 < 5.10.0.374affected
WSO2WSO2 Open Banking AM0 < 2.0.0unknown
WSO2WSO2 Open Banking AM2.0.0 < 2.0.0.403affected
WSO2WSO2 Open Banking IAM0 < 2.0.0unknown
WSO2WSO2 Open Banking IAM2.0.0 < 2.0.0.423affected
WSO2WSO2 Carbon Identity Management Endpoint Util5.17.5 < 5.17.5.332affected
WSO2WSO2 Carbon Identity Management Endpoint Util5.18.187 < 5.18.187.330affected
WSO2WSO2 Carbon Identity Management Endpoint Util5.23.8 < 5.23.8.213affected
WSO2WSO2 Carbon Identity Management Endpoint Util5.25.92 < 5.25.92.167affected
WSO2WSO2 Carbon Identity Management Endpoint Util7.0.78 < 7.0.78.162affected
WSO2WSO2 Carbon Identity Management Endpoint Utilx <= *unaffected
WSO2WSO2 Carbon Identity Application Authentication Framework5.17.5 < 5.17.5.332affected
WSO2WSO2 Carbon Identity Application Authentication Framework5.18.187 < 5.18.187.330affected
WSO2WSO2 Carbon Identity Application Authentication Frameworkx <= *unaffected

Weaknesses

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

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References