Username Enumeration via Authentication Endpoint in WSO2 Identity Server Allows User Account Discovery
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WSO2 | WSO2 Identity Server | unaffected |
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| WSO2 | WSO2 Carbon Abstract OTP Authenticator | unknown |
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| WSO2 | Email OTP Authenticator | unknown |
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No data.
No data.
| Vendor | Product | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wso2 | Email Otp Authenticator |
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| Wso2 | Identity Server |
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| Wso2 | Wso2 Carbon Abstract Otp Authenticator |
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| Wso2 | Wso2 Identity Server |
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Vendor Solution
Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4583/#solution
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.297% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Wso2 identity Server
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| Vendors & Products |
Wso2 identity Server
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | The authentication endpoint of WSO2 Identity Server fails to provide a consistent system response when a username does not exist in the system, allowing attackers to differentiate between valid and invalid usernames. This difference in responses can be leveraged to enumerate existing user accounts. Successful exploitation enables an attacker to discover valid usernames within the system, significantly increasing the risk of subsequent attacks such as brute force attacks on user credentials, social engineering attacks, and information leakage. The discovered usernames can be used to craft targeted phishing emails or other social engineering campaigns. | |
| Title | Username Enumeration via Authentication Endpoint in WSO2 Identity Server Allows User Account Discovery | |
| First Time appeared |
Wso2
Wso2 email Otp Authenticator Wso2 wso2 Carbon Abstract Otp Authenticator Wso2 wso2 Identity Server |
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| Weaknesses | CWE-203 | |
| CPEs | cpe:2.3:a:wso2:email_otp_authenticator:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_carbon_abstract_otp_authenticator:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:* |
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| Vendors & Products |
Wso2
Wso2 email Otp Authenticator Wso2 wso2 Carbon Abstract Otp Authenticator Wso2 wso2 Identity Server |
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| References |
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| Metrics |
cvssV3_1
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