When a WSO2 product is configured to use an external user store, the system fails to adequately obscure the existence or validity of usernames during authentication attempts. This oversight allows an attacker to repeatedly query the authentication mechanism with different username guesses, enabling the enumeration of valid usernames present in the external user store.
The discovery of valid usernames can increase the risk of targeted brute-force attacks, social engineering, and information leakage. Attackers can leverage this information to craft more convincing phishing campaigns or other social engineering tactics to trick users into revealing sensitive data. The presence of username enumeration could also negatively impact an organization's reputation, leading to loss of customer trust, regulatory non-compliance, and potential legal and financial repercussions.
The discovery of valid usernames can increase the risk of targeted brute-force attacks, social engineering, and information leakage. Attackers can leverage this information to craft more convincing phishing campaigns or other social engineering tactics to trick users into revealing sensitive data. The presence of username enumeration could also negatively impact an organization's reputation, leading to loss of customer trust, regulatory non-compliance, and potential legal and financial repercussions.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3606/#solution
Workaround
No workaround given by the vendor.
References
History
Wed, 21 Oct 2026 14:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | When a WSO2 product is configured to use an external user store, the system fails to adequately obscure the existence or validity of usernames during authentication attempts. This oversight allows an attacker to repeatedly query the authentication mechanism with different username guesses, enabling the enumeration of valid usernames present in the external user store. The discovery of valid usernames can increase the risk of targeted brute-force attacks, social engineering, and information leakage. Attackers can leverage this information to craft more convincing phishing campaigns or other social engineering tactics to trick users into revealing sensitive data. The presence of username enumeration could also negatively impact an organization's reputation, leading to loss of customer trust, regulatory non-compliance, and potential legal and financial repercussions. | |
| Title | Username Enumeration via External User Stores in Multiple WSO2 Products Allows User Account Discovery | |
| First Time appeared |
Wso2
Wso2 wso2 Api Manager Wso2 wso2 Carborn Identity Handler Wso2 wso2 Identity Server Wso2 wso2 Identity Server As Key Manager Wso2 wso2 Open Banking Am Wso2 wso2 Open Banking Iam |
|
| Weaknesses | CWE-204 | |
| CPEs | cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_carborn_identity_handler:*:*:*:*:*:*:*:* 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_am:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_open_banking_iam:*:*:*:*:*:*:*:* |
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| Vendors & Products |
Wso2
Wso2 wso2 Api Manager Wso2 wso2 Carborn Identity Handler Wso2 wso2 Identity Server Wso2 wso2 Identity Server As Key Manager Wso2 wso2 Open Banking Am Wso2 wso2 Open Banking Iam |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: WSO2
Published:
Updated: 2026-10-21T13:49:07.839Z
Reserved: 2024-08-05T07:38:19.343Z
Link: CVE-2024-7478
No data.
Status : Awaiting Analysis
Published: 2026-10-21T14:17:06.147
Modified: 2026-10-21T18:37:59.557
Link: CVE-2024-7478
No data.
OpenCVE Enrichment
Updated: 2026-10-21T19:15:16Z
Weaknesses