{
  "document" : {
    "aggregate_severity" : {
      "text" : "hoch"
    },
    "category" : "csaf_base",
    "csaf_version" : "2.0",
    "distribution" : {
      "tlp" : {
        "label" : "WHITE",
        "url" : "https://www.first.org/tlp/"
      }
    },
    "lang" : "de-DE",
    "notes" : [ {
      "category" : "legal_disclaimer",
      "text" : "Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen."
    }, {
      "category" : "description",
      "text" : "Apache ist ein Webserver für verschiedene Plattformen.\r\nNGINX ist eine Webserver-, Reverse Proxy- und E-Mail-Proxy Software.\r\nMicrosoft Internet Information Services (IIS) stellt die Internet Informationsdienste (WWW-Server, FTP-Server, NNTP-Dienst und SMTP-Dienst) für die Microsoft Betriebssysteme zur Verfügung.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in verschiedenen HTTP/2-Implementierungen ausnutzen, um einen Denial of Service Angriff durchzuführen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- Linux\n- UNIX\n- Windows",
      "title" : "Betroffene Betriebssysteme"
    } ],
    "publisher" : {
      "category" : "other",
      "contact_details" : "csaf-provider@cert-bund.de",
      "name" : "Bundesamt für Sicherheit in der Informationstechnik",
      "namespace" : "https://www.bsi.bund.de"
    },
    "references" : [ {
      "category" : "self",
      "summary" : "WID-SEC-W-2026-1791 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1791.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2026-1791 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1791"
    }, {
      "category" : "external",
      "summary" : "Calif Blog vom 2026-06-04",
      "url" : "https://blog.calif.io/p/codex-discovered-a-hidden-http2-bomb"
    }, {
      "category" : "external",
      "summary" : "HTTP/2 Bomb GitHub Repository vom 2026-06-04",
      "url" : "https://github.com/califio/publications/tree/main/MADBugs/http2-bomb"
    }, {
      "category" : "external",
      "summary" : "Apache httpd Commit vom 2026-06-04",
      "url" : "https://github.com/apache/httpd/commit/47d3100b252dc6668a9e46ae885242be9eeca9cd"
    }, {
      "category" : "external",
      "summary" : "NGINX Commit vom 2026-06-04",
      "url" : "https://github.com/nginx/nginx/commit/365694160a85229a7cb006738de9260d49ff5fa2"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux CVE Tracker",
      "url" : "https://explore.alas.aws.amazon.com/CVE-2026-49975.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Tracker",
      "url" : "https://security-tracker.debian.org/tracker/CVE-2026-49975"
    }, {
      "category" : "external",
      "summary" : "SUSE CVE Status",
      "url" : "https://www.suse.com/security/cve/CVE-2026-49975.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DSA-6323 vom 2026-06-06",
      "url" : "https://security-tracker.debian.org/tracker/DSA-6323-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-8398-1 vom 2026-06-08",
      "url" : "https://ubuntu.com/security/notices/USN-8398-1"
    }, {
      "category" : "external",
      "summary" : "Microsoft Security Update Guide vom 2026-06-09",
      "url" : "https://msrc.microsoft.com/update-guide/"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-8398-2 vom 2026-06-09",
      "url" : "https://ubuntu.com/security/notices/USN-8398-2"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:25042 vom 2026-06-10",
      "url" : "https://access.redhat.com/errata/RHSA-2026:25042"
    } ],
    "source_lang" : "en-US",
    "title" : "HTTP/2-Implementierungen: Schwachstelle ermöglicht Denial of Service",
    "tracking" : {
      "current_release_date" : "2026-06-09T22:00:00.000+00:00",
      "generator" : {
        "date" : "2026-06-10T11:26:06.169+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.6.0"
        }
      },
      "id" : "WID-SEC-W-2026-1791",
      "initial_release_date" : "2026-06-04T22:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2026-06-04T22:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2026-06-07T22:00:00.000+00:00",
        "number" : "2",
        "summary" : "Neue Updates von Debian aufgenommen"
      }, {
        "date" : "2026-06-08T22:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von European Union Vulnerability Database und Ubuntu aufgenommen"
      }, {
        "date" : "2026-06-09T22:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      } ],
      "status" : "final",
      "version" : "4"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Amazon Linux 2",
        "product" : {
          "name" : "Amazon Linux 2",
          "product_id" : "T054035",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:amazon:linux_2:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Amazon"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Apache HTTP Server",
        "product" : {
          "name" : "Apache HTTP Server",
          "product_id" : "T031571",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:apache:http_server:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Apache"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Debian Linux",
        "product" : {
          "name" : "Debian Linux",
          "product_id" : "T054613",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:debian:debian_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Debian"
    }, {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version",
          "name" : "azl3",
          "product" : {
            "name" : "Microsoft Azure Linux azl3",
            "product_id" : "T049210",
            "product_identification_helper" : {
              "cpe" : "cpe:/o:microsoft:azure_linux:azl3"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "Azure Linux"
      }, {
        "category" : "product_name",
        "name" : "Microsoft Internet Information Services",
        "product" : {
          "name" : "Microsoft Internet Information Services",
          "product_id" : "T013630",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:microsoft:internet_information_services:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Microsoft"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "NGINX NGINX",
        "product" : {
          "name" : "NGINX NGINX",
          "product_id" : "T014143",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:nginx:nginx:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "NGINX"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Red Hat Enterprise Linux",
        "product" : {
          "name" : "Red Hat Enterprise Linux",
          "product_id" : "67646",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:redhat:enterprise_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Red Hat"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "SUSE Linux",
        "product" : {
          "name" : "SUSE Linux",
          "product_id" : "T048869",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:suse:suse_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "SUSE"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Ubuntu Linux",
        "product" : {
          "name" : "Ubuntu Linux",
          "product_id" : "T000126",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:canonical:ubuntu_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Ubuntu"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2026-49975",
    "product_status" : {
      "known_affected" : [ "T048869", "T054035", "67646", "T000126", "T054613", "T013630", "T049210", "T031571", "T014143" ]
    },
    "release_date" : "2026-06-04T22:00:00.000+00:00",
    "title" : "CVE-2026-49975"
  } ]
}