{
  "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-2026-9549",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-9549",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-08T12:07:12.356Z",
    "updatedAt": "2026-06-08T13:02:20.748Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "Fix XSS in service discovery active check output",
      "summary": "Stored cross-site scripting in the service discovery active check output in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can configure active or custom checks to inject malicious HTML or JavaScript into check output that executes in the browser of an admin or a user with host read permissions when they run the check on the service discovery page.",
      "affected": [
        {
          "vendor": "Checkmk GmbH",
          "product": "Checkmk",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.5.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.5.0p5"
            },
            {
              "version": "2.4.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.4.0p31"
            },
            {
              "version": "2.3.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.3.0p48"
            },
            {
              "version": "2.2.0",
              "status": "affected",
              "versionType": "semver"
            }
          ]
        }
      ]
    }
  }
}