CVE-2024-7478
Received
Received - Intake
Username Enumeration in WSO2 External User Store
Vulnerability report for CVE-2024-7478, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-21
Last updated on: 2026-10-21
Assigner: WSO2 LLC
Description
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.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| WSO2 | WSO2 | API Manager 3.1.0 |
| WSO2 | WSO2 | API Manager 3.2.0 |
| WSO2 | WSO2 | API Manager 3.2.1 |
| WSO2 | WSO2 | API Manager 4.0.0 |
| WSO2 | WSO2 | API Manager 4.1.0 |
| WSO2 | WSO2 | API Manager 4.2.0 |
| WSO2 | WSO2 | API Manager 4.3.0 |
| WSO2 | WSO2 | Identity Server as Key Manager 5.10.0 |
| WSO2 | WSO2 | Identity Server 5.10.0 |
| WSO2 | WSO2 | Identity Server 6.0.0 |
| WSO2 | WSO2 | Identity Server 6.1.0 |
| WSO2 | WSO2 | Identity Server 7.0.0 |
| WSO2 | WSO2 | Open Banking IAM 2.0.0 |
| WSO2 | WSO2 | Open Banking AM 2.0.0 |
| WSO2 | WSO2 | Carborn Identity Handler 1.4.0 |
| WSO2 | WSO2 | Carborn Identity Handler 1.4.0 |
| WSO2 | WSO2 | Carborn Identity Handler 1.4.11 |
| WSO2 | WSO2 | Carborn Identity Handler 1.4.37 |
| WSO2 | WSO2 | Carborn Identity Handler 1.6.1 |
| WSO2 | WSO2 | Carborn Identity Handler 1.7.1 |
| WSO2 | WSO2 | Carborn Identity Handler 1.8.6 |
| WSO2 | WSO2 | Carborn Identity Handler 1.8.14 |
| WSO2 | WSO2 | Carborn Identity Handler 1.9.2 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-204 | The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere. |
