{
  "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-2026-4519",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-4519",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-03-20T15:08:32.576Z",
    "updatedAt": "2026-08-13T00:27:28.648Z",
    "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": "webbrowser.open() allows leading dashes in URLs",
      "summary": "The webbrowser.open() API would accept leading dashes in the URL which \ncould be handled as command line options for certain web browsers. New \nbehavior rejects leading dashes. Users are recommended to sanitize URLs \nprior to passing to webbrowser.open().",
      "affected": [
        {
          "vendor": "Python Software Foundation",
          "product": "CPython",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "python",
              "lessThan": "3.10.21"
            },
            {
              "version": "3.11.0",
              "status": "affected",
              "versionType": "python",
              "lessThan": "3.11.16"
            },
            {
              "version": "3.12.0",
              "status": "affected",
              "versionType": "python",
              "lessThan": "3.12.14"
            },
            {
              "version": "3.13.0",
              "status": "affected",
              "versionType": "python",
              "lessThan": "3.13.13"
            },
            {
              "version": "3.14.0",
              "status": "affected",
              "versionType": "python",
              "lessThan": "3.14.4"
            },
            {
              "version": "3.15.0a1",
              "status": "affected",
              "versionType": "python",
              "lessThan": "3.15.0a8"
            }
          ]
        }
      ]
    }
  }
}