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CVE-2024-7478— Username Enumeration via External User Stores in Multiple WSO2 Products Allows User Account Discovery

Quick assessment

Affected
WSO2 WSO2 API Manager
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

当 WSO2 产品配置为使用外部用户存储时，系统在认证尝试过程中未能有效隐藏用户名的存在性或有效性。这一疏漏使得攻击者能够反复向认证机制提交不同的用户名猜测，从而枚举出外部用户存储中有效的用户名。 有效用户名的泄露会加剧针对性暴力破解攻击、社会工程攻击以及信息泄露的风险。攻击者可利用这些信息设计更具说服力的网络钓鱼活动或其他社会工程手段，诱骗用户泄露敏感数据。此外，用户名枚举漏洞还可能对组织的声誉造成负面影响，导致客户信任流失、违反监管要求，并引发潜在的法律与财务后果。

CVSS 5.8 · Medium

Affected Version Matrix 28

VendorProduct Version RangeStatus
WSO2 WSO2 API Manager < 3.1.0 unknown
3.1.0< 3.1.0.310 affected
3.2.0< 3.2.0.401 affected
3.2.1< 3.2.1.26 affected
4.0.0< 4.0.0.318 affected
4.1.0< 4.1.0.180 affected
4.2.0< 4.2.0.119 affected
4.3.0< 4.3.0.30 affected
WSO2 WSO2 Carborn Identity Handler 1.4.0< 1.4.0.15 affected
1.4.0< 1.4.0.16 affected
1.4.11< 1.4.11.14 affected
1.4.37< 1.4.37.1 affected
1.6.1< 1.6.1.5 affected
1.7.1< 1.7.1.1 affected
1.8.6< 1.8.6.5 affected
1.8.14< 1.8.14.1 affected
… +1 more rows
WSO2 WSO2 Identity Server < 5.10.0 unknown
5.10.0< 5.10.0.326 affected
6.0.0< 6.0.0.214 affected
6.1.0< 6.1.0.198 affected
7.0.0< 7.0.0.67 affected
WSO2 WSO2 Identity Server as Key Manager < 5.10.0 unknown
5.10.0< 5.10.0.320 affected
WSO2 WSO2 Open Banking AM < 2.0.0 unknown
2.0.0< 2.0.0.351 affected
WSO2 WSO2 Open Banking IAM < 2.0.0 unknown
2.0.0< 2.0.0.371 affected
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I. Basic Information for CVE-2024-7478

Vulnerability Information
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Vulnerability Title
Username Enumeration via External User Stores in Multiple WSO2 Products Allows User Account Discovery
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WSO2 WSO2 API Manager 3.1.0 ~ 3.1.0.310 -
WSO2 WSO2 Identity Server as Key Manager 5.10.0 ~ 5.10.0.320 -
WSO2 WSO2 Identity Server 5.10.0 ~ 5.10.0.326 -
WSO2 WSO2 Open Banking IAM 2.0.0 ~ 2.0.0.371 -
WSO2 WSO2 Open Banking AM 2.0.0 ~ 2.0.0.351 -
WSO2 WSO2 Carborn Identity Handler 1.4.0 ~ 1.4.0.15 -

II. Public POCs for CVE-2024-7478

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III. Intelligence Information for CVE-2024-7478

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Other References for CVE-2024-7478 (1)

Same Patch Batch · WSO2 · 2026-10-21 · 6 CVEs total

CVE-2024-5139 6.1 MEDIUM Cross-Site Scripting via Authentication Endpoint in Multiple WSO2 Products Enables UI Mani
CVE-2024-4989 5.4 MEDIUM Open Redirection via Callback URL in WSO2 API Manager Allows Phishing Attacks
CVE-2024-5563 4.8 MEDIUM Incomplete reCaptcha Implementation in Authentication Flows in WSO2 Identity Server Allows
CVE-2024-6423 4.0 MEDIUM Sensitive Data Exposure via URL Parameters in Multiple WSO2 Products Allows Confidential I
CVE-2025-0326 Improper Token Revocation in WSO2 Identity Server Allows Unauthorized Access

IV. Related Vulnerabilities

Same product: WSO2 API Manager
Same vendor: WSO2
Same weakness: CWE-204

V. Comments for CVE-2024-7478

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