{
  "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-2026-2742",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-2742",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-03-10T12:08:48.738Z",
    "updatedAt": "2026-03-16T10:52:30.637Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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": "Unauthorized session creation via reserved framework path access",
      "summary": "An authentication bypass vulnerability exists in Vaadin 14.0.0 through 14.14.0, 23.0.0 through 23.6.6, 24.0.0 through 24.9.7 and 25.0.0 through 25.0.1, applications using Spring Security due to inconsistent path pattern matching of reserved framework paths.\n\nAccessing the /VAADIN endpoint without a trailing slash bypasses security filters, and allowing unauthenticated users to trigger framework initialization and create sessions without proper authorization.\n\nUsers of affected versions using Spring Security should upgrade as follows: 14.0.0-14.14.0 upgrade to 14.14.1, 23.0.0-23.6.6 to 23.6.7, 24.0.0 - 24.9.7 to 24.9.8, and 25.0.0-25.0.1 upgrade to 25.0.2 or newer.\n\nPlease note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 14, 23, 24, 25 version.",
      "affected": [
        {
          "vendor": "vaadin",
          "product": "vaadin",
          "packageName": "com.vaadin:vaadin",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "10.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThanOrEqual": "14.14.0"
            },
            {
              "version": "15.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThanOrEqual": "23.6.6"
            },
            {
              "version": "24.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThanOrEqual": "24.9.7"
            },
            {
              "version": "25.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThanOrEqual": "25.0.1"
            }
          ]
        },
        {
          "vendor": "vaadin",
          "product": "flow",
          "packageName": "com.vaadin:flow-server",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThanOrEqual": "2.13.0"
            },
            {
              "version": "3.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThanOrEqual": "23.6.7"
            },
            {
              "version": "24.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThanOrEqual": "24.9.7"
            },
            {
              "version": "25.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThan": "25.0.1"
            }
          ]
        }
      ]
    }
  }
}