Username Enumeration in Multiple WSO2 Products with Multi-Attribute Login Enabled_CVE-2025-1396

{
    "lastseen": "",
    "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.\n\n\nExploitation 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.",
    "published": "2025-09-26T07:52:52.297Z",
    "modified": "2025-09-26T07:52:52.297Z",
    "type": "cve",
    "title": "Username Enumeration in Multiple WSO2 Products with Multi-Attribute Login Enabled",
    "source": "WSO2",
    "references": "https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2025/WSO2-2025-3983/",
    "id": "CVE-2025-1396",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "WSO2 WSO2 Identity Server 5.10.0\nWSO2 WSO2 Identity Server 5.11.0\nWSO2 WSO2 Identity Server 6.0.0\nWSO2 WSO2 Identity Server 6.1.0\nWSO2 WSO2 Open Banking IAM 2.0.0\nWSO2 WSO2 Identity Server as Key Manager 5.10.0",
    "sourceHref": "",
    "cvss": {
        "score": 3.7,
        "severity": "LOW",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "WSO2 Identity Server",
    "version": "0",
    "vendor": "WSO2",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}