The check user account lock states feature within the email OTP flow fails to validate user input, allowing an attacker to infer the existence of registered user accounts.
The discovery of valid usernames can increase the risk of brute-force and social engineering attacks. Attackers can leverage this information to craft targeted phishing campaigns or other malicious activities aimed at tricking users into divulging sensitive data, potentially damaging the organization's reputation and leading to regulatory non-compliance and financial consequences.
Metrics
Affected Vendors & Products
References
History
Mon, 11 May 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The check user account lock states feature within the email OTP flow fails to validate user input, allowing an attacker to infer the existence of registered user accounts. The discovery of valid usernames can increase the risk of brute-force and social engineering attacks. Attackers can leverage this information to craft targeted phishing campaigns or other malicious activities aimed at tricking users into divulging sensitive data, potentially damaging the organization's reputation and leading to regulatory non-compliance and financial consequences. | |
| Title | Username Enumeration via Email OTP Flow in Multiple WSO2 Products Allows User Account Discovery | |
| First Time appeared |
Wso2
Wso2 email Otp Authenticator Wso2 wso2 Carbon Authenticator Library For Emailotp Wso2 wso2 Identity Server Wso2 wso2 Identity Server As Key Manager Wso2 wso2 Open Banking Iam |
|
| Weaknesses | CWE-204 | |
| CPEs | cpe:2.3:a:wso2:email_otp_authenticator:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_carbon_authenticator_library_for_emailotp:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_identity_server_as_key_manager:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_open_banking_iam:*:*:*:*:*:*:*:* |
|
| Vendors & Products |
Wso2
Wso2 email Otp Authenticator Wso2 wso2 Carbon Authenticator Library For Emailotp Wso2 wso2 Identity Server Wso2 wso2 Identity Server As Key Manager Wso2 wso2 Open Banking Iam |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: WSO2
Published: 2026-05-11T08:45:33.754Z
Updated: 2026-05-11T12:46:03.691Z
Reserved: 2024-01-10T09:02:14.122Z
Link: CVE-2024-0391
Updated: 2026-05-11T12:45:59.492Z
Status : Received
Published: 2026-05-11T10:16:11.593
Modified: 2026-05-11T10:16:11.593
Link: CVE-2024-0391
No data.