{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2024-0391",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-0391",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-11T08:45:33.754Z",
    "updatedAt": "2026-05-11T12:46:03.691Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Username Enumeration via Email OTP Flow in Multiple WSO2 Products Allows User Account Discovery",
      "summary": "The check user account lock states feature within the email OTP flow fails to validate user input, allowing an attacker to infer the existence of registered user accounts.\n\nThe discovery of valid usernames can increase the risk of brute-force and social engineering attacks. Attackers can leverage this information to craft targeted phishing campaigns or other malicious activities aimed at tricking users into divulging sensitive data, potentially damaging the organization's reputation and leading to regulatory non-compliance and financial consequences.",
      "affected": [
        {
          "vendor": "WSO2",
          "product": "WSO2 Identity Server",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "unknown",
              "versionType": "custom",
              "lessThan": "5.10.0"
            },
            {
              "version": "5.10.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "5.10.0.379"
            },
            {
              "version": "5.11.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "5.11.0.426"
            },
            {
              "version": "5.11.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "5.11.0.431"
            },
            {
              "version": "6.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.0.0.253"
            },
            {
              "version": "6.1.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "6.1.0.254"
            },
            {
              "version": "7.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "7.0.0.131"
            }
          ]
        },
        {
          "vendor": "WSO2",
          "product": "WSO2 Open Banking IAM",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "unknown",
              "versionType": "custom",
              "lessThan": "2.0.0"
            },
            {
              "version": "2.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "2.0.0.318"
            }
          ]
        },
        {
          "vendor": "WSO2",
          "product": "WSO2 Identity Server as Key Manager",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "unknown",
              "versionType": "custom",
              "lessThan": "5.10.0"
            },
            {
              "version": "5.10.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "5.10.0.267"
            }
          ]
        },
        {
          "vendor": "WSO2",
          "product": "Email OTP Authenticator",
          "packageName": "org.wso2.carbon.identity.local.auth.emailotp:org.wso2.carbon.identity.local.auth.emailotp",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "1.0.18",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "1.0.18.7"
            },
            {
              "version": "1.0.24",
              "status": "unaffected",
              "versionType": "custom",
              "lessThanOrEqual": "*"
            }
          ]
        },
        {
          "vendor": "WSO2",
          "product": "WSO2 Carbon Authenticator Library For EmailOTP",
          "packageName": "org.wso2.carbon.extension.identity.authenticator.outbound.emailotp:org.wso2.carbon.identity.authenticator.emailotp",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "4.1.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.1.0.8"
            },
            {
              "version": "4.1.4",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.1.4.9"
            },
            {
              "version": "4.1.22",
              "status": "unaffected",
              "versionType": "custom",
              "lessThanOrEqual": "*"
            }
          ]
        },
        {
          "vendor": "WSO2",
          "product": "WSO2 Carbon Authenticator Library For EmailOTP",
          "packageName": "org.wso2.carbon.extension.identity.authenticator.outbound.emailotp:org.wso2.carbon.extension.identity.authenticator.emailotp.connector",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "3.0.5",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.0.5.8"
            },
            {
              "version": "3.0.24",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.0.24.6"
            },
            {
              "version": "3.0.26",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.0.26.16"
            }
          ]
        }
      ]
    }
  }
}