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CVE-2025-1396— Username Enumeration in Multiple WSO2 Products with Multi-Attribute Login Enabled

Quick assessment

Affected
WSO2 WSO2 Identity Server
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.

WSO2 Identity Server（IS）是美国WSO2公司的一款身份认证服务器。 WSO2 Identity Server存在安全漏洞，该漏洞源于启用Multi-Attribute Login时返回特定错误消息，可能导致用户名枚举攻击。

CVSS 3.7 · Low EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1087 · Account Discovery
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I. Basic Information for CVE-2025-1396

Vulnerability Information
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Vulnerability Title
Username Enumeration in Multiple WSO2 Products with Multi-Attribute Login Enabled
Source: CVE Program / CVE List V5
Vulnerability Description
A username enumeration vulnerability exists in multiple WSO2 products when Multi-Attribute Login is enabled. In this configuration, the system returns a distinct "User does not exist" error message to the login form, regardless of the validate_username setting. This behavior allows malicious actors to determine which usernames exist in the system based on observable discrepancies in the application's responses. Exploitation of this vulnerability could aid in brute-force attacks, targeted phishing campaigns, or other social engineering techniques by confirming the validity of user identifiers within the system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
WSO2 Identity Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WSO2 Identity Server（IS）是美国WSO2公司的一款身份认证服务器。 WSO2 Identity Server存在安全漏洞，该漏洞源于启用Multi-Attribute Login时返回特定错误消息，可能导致用户名枚举攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
WSO2 WSO2 Identity Server 5.10.0 ~ 5.10.0.346 -
WSO2 WSO2 Open Banking IAM 2.0.0 ~ 2.0.0.390 -
WSO2 WSO2 Identity Server as Key Manager 5.10.0 ~ 5.10.0.339 -

II. Public POCs for CVE-2025-1396

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III. Intelligence Information for CVE-2025-1396

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Vendor Advisories for CVE-2025-1396 (1)

IV. Related Vulnerabilities

Same product: WSO2 Identity Server
Same vendor: WSO2
Same weakness: CWE-203

V. Comments for CVE-2025-1396

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