{
  "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-2023-43622",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-43622",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-10-23T06:50:51.555Z",
    "updatedAt": "2025-02-13T17:13:24.282Z",
    "importedAt": "2026-10-24T01:56:58.683Z",
    "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": "Apache HTTP Server: DoS in HTTP/2 with initial windows size 0",
      "summary": "An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handling of that connection indefinitely in Apache HTTP Server. This could be used to exhaust worker resources in the server, similar to the well known \"slow loris\" attack pattern.\nThis has been fixed in version 2.4.58, so that such connection are terminated properly after the configured connection timeout.\n\nThis issue affects Apache HTTP Server: from 2.4.55 through 2.4.57.\n\nUsers are recommended to upgrade to version 2.4.58, which fixes the issue.",
      "affected": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache HTTP Server",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.4.55",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "2.4.57"
            }
          ]
        }
      ]
    }
  }
}