CVE-2025-5802mediumCWE-203

CVE-2025-5802: medium-severity vulnerability in WSO2 API Control Plane

Username Enumeration via Self Registration Flow in Multiple WSO2 Products Allows User Account Discovery

Published

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
WSO2 · WSO2 API Control PlaneWSO2 · WSO2 API ManagerWSO2 · WSO2 Carbon Identity Application Authentication FrameworkWSO2 · WSO2 Carbon Identity Management Endpoint UtilWSO2 · WSO2 Identity ServerWSO2 · WSO2 Identity Server as Key ManagerWSO2 · WSO2 Open Banking AMWSO2 · WSO2 Open Banking IAMWSO2 · WSO2 Traffic ManagerWSO2 · WSO2 Universal Gateway
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