{
  "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-2026-4249",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-4249",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-06T10:16:56.055Z",
    "updatedAt": "2026-07-06T11:03:48.847Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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": "Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption",
      "summary": "The throttling event handling mechanism in multiple WSO2 products accepts user-supplied JSON payloads without sufficient validation of their structure and content. This allows an unauthenticated remote attacker to inject malicious JSON data that can lead to a persistent denial of service condition.\n\nSuccessful exploitation of this vulnerability can disrupt the API Gateway, preventing legitimate API traffic from being processed and impacting complete service availability. The denial of service is persistent, requiring manual intervention to restore normal operations.",
      "affected": [
        {
          "vendor": "WSO2",
          "product": "WSO2 Universal Gateway",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4.5.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.5.0.54"
            },
            {
              "version": "4.6.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.6.0.18"
            },
            {
              "version": "4.7.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.7.0.2"
            }
          ]
        },
        {
          "vendor": "WSO2",
          "product": "WSO2 Traffic Manager",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4.5.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.5.0.53"
            },
            {
              "version": "4.6.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.6.0.18"
            },
            {
              "version": "4.7.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.7.0.2"
            }
          ]
        },
        {
          "vendor": "WSO2",
          "product": "WSO2 API Control Plane",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4.5.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.5.0.55"
            },
            {
              "version": "4.6.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.6.0.19"
            },
            {
              "version": "4.7.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.7.0.2"
            }
          ]
        },
        {
          "vendor": "WSO2",
          "product": "WSO2 API Manager",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "unknown",
              "versionType": "custom",
              "lessThan": "3.2.0"
            },
            {
              "version": "3.2.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.2.0.470"
            },
            {
              "version": "3.2.1",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.2.1.89"
            },
            {
              "version": "4.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.0.0.390"
            },
            {
              "version": "4.1.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.1.0.254"
            },
            {
              "version": "4.2.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.2.0.194"
            },
            {
              "version": "4.3.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.3.0.105"
            },
            {
              "version": "4.4.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.4.0.69"
            },
            {
              "version": "4.5.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.5.0.54"
            },
            {
              "version": "4.6.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.6.0.18"
            },
            {
              "version": "4.7.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "4.7.0.2"
            }
          ]
        }
      ]
    }
  }
}