{
  "document" : {
    "aggregate_severity" : {
      "text" : "mittel"
    },
    "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" : "nghttp2 ist eine Implementierung von HTTP/2 und dessen Header-Kompressionsalgorithmus HPACK in C.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in nghttp2 ausnutzen, um einen Denial of Service Angriff durchzuführen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- Linux\n- Sonstiges\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-2026-0775 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0775.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2026-0775 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0775"
    }, {
      "category" : "external",
      "summary" : "nghttp2 GitHub Security Advisory GHSA-6933-cjhr-5qg6 vom 2026-03-17",
      "url" : "https://github.com/nghttp2/nghttp2/security/advisories/GHSA-6933-cjhr-5qg6"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:1074-1 vom 2026-03-26",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024959.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:1056-1 vom 2026-03-26",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024951.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:20870-1 vom 2026-03-27",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024971.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:20833-1 vom 2026-03-28",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-March/025004.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:20925-1 vom 2026-04-01",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025092.html"
    }, {
      "category" : "external",
      "summary" : "Google Container-Optimized OS release notes vom 2026-04-04",
      "url" : "https://docs.cloud.google.com/container-optimized-os/docs/release-notes#March_30_2026"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:7670 vom 2026-04-13",
      "url" : "https://errata.build.resf.org/RLSA-2026:7670"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:1247-1 vom 2026-04-10",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025204.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:7670 vom 2026-04-13",
      "url" : "https://access.redhat.com/errata/RHSA-2026:7670"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:7666 vom 2026-04-13",
      "url" : "https://access.redhat.com/errata/RHSA-2026:7666"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:7667 vom 2026-04-13",
      "url" : "https://access.redhat.com/errata/RHSA-2026:7667"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:7668 vom 2026-04-13",
      "url" : "https://access.redhat.com/errata/RHSA-2026:7668"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2026-7666 vom 2026-04-13",
      "url" : "https://linux.oracle.com/errata/ELSA-2026-7666.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:7983 vom 2026-04-14",
      "url" : "https://access.redhat.com/errata/RHSA-2026:7983"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2026-7668 vom 2026-04-13",
      "url" : "https://linux.oracle.com/errata/ELSA-2026-7668.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS2-2026-3232 vom 2026-04-14",
      "url" : "https://alas.aws.amazon.com/AL2/ALAS2-2026-3232.html"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:7896 vom 2026-04-14",
      "url" : "https://errata.build.resf.org/RLSA-2026:7896"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2026-7667 vom 2026-04-13",
      "url" : "https://linux.oracle.com/errata/ELSA-2026-7667.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:1350-1 vom 2026-04-15",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025367.html"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:7668 vom 2026-04-15",
      "url" : "https://errata.build.resf.org/RLSA-2026:7668"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:8339 vom 2026-04-16",
      "url" : "https://errata.build.resf.org/RLSA-2026:8339"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:7666 vom 2026-04-15",
      "url" : "https://errata.build.resf.org/RLSA-2026:7666"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8339 vom 2026-04-15",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8339"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:7667 vom 2026-04-16",
      "url" : "https://errata.build.resf.org/RLSA-2026:7667"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8546 vom 2026-04-16",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8546"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8545 vom 2026-04-16",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8545"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8541 vom 2026-04-16",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8541"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8540 vom 2026-04-16",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8540"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8539 vom 2026-04-16",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8539"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8538 vom 2026-04-16",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8538"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8548 vom 2026-04-16",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8548"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8547 vom 2026-04-16",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8547"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:8868 vom 2026-04-20",
      "url" : "https://access.redhat.com/errata/RHSA-2026:8868"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:10065 vom 2026-04-23",
      "url" : "https://access.redhat.com/errata/RHSA-2026:10065"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:9711 vom 2026-04-22",
      "url" : "https://access.redhat.com/errata/RHSA-2026:9711"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:9832 vom 2026-04-22",
      "url" : "https://access.redhat.com/errata/RHSA-2026:9832"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:9874 vom 2026-04-22",
      "url" : "https://access.redhat.com/errata/RHSA-2026:9874"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:11768 vom 2026-04-29",
      "url" : "https://access.redhat.com/errata/RHSA-2026:11768"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:13812 vom 2026-05-05",
      "url" : "https://access.redhat.com/errata/RHSA-2026:13812"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-8233-1 vom 2026-05-05",
      "url" : "https://ubuntu.com/security/notices/USN-8233-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-8233-2 vom 2026-05-06",
      "url" : "https://ubuntu.com/security/notices/USN-8233-2"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:14391 vom 2026-05-07",
      "url" : "https://access.redhat.com/errata/RHSA-2026:14391"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:14937 vom 2026-05-08",
      "url" : "https://access.redhat.com/errata/RHSA-2026:14937"
    }, {
      "category" : "external",
      "summary" : "IBM Security Bulletin 7272299 vom 2026-05-07",
      "url" : "https://www.ibm.com/support/pages/node/7272299"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory vom 2026-05-13",
      "url" : "https://access.redhat.com/errata/RHSA-2026:14773"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:15087 vom 2026-05-13",
      "url" : "https://access.redhat.com/errata/RHSA-2026:15087"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DSA-6266 vom 2026-05-14",
      "url" : "https://lists.debian.org/debian-security-announce/2026/msg00177.html"
    }, {
      "category" : "external",
      "summary" : "IBM Security Bulletin 7273145 vom 2026-05-15",
      "url" : "https://www.ibm.com/support/pages/node/7273145"
    }, {
      "category" : "external",
      "summary" : "IBM Security Bulletin 7273338 vom 2026-05-18",
      "url" : "https://www.ibm.com/support/pages/node/7273338"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:19724 vom 2026-05-21",
      "url" : "https://access.redhat.com/errata/RHSA-2026:19724"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:17596 vom 2026-05-20",
      "url" : "https://access.redhat.com/errata/RHSA-2026:17596"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:20040 vom 2026-05-27",
      "url" : "https://access.redhat.com/errata/RHSA-2026:20040"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:20087 vom 2026-05-29",
      "url" : "https://access.redhat.com/errata/RHSA-2026:20087"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:21656 vom 2026-06-03",
      "url" : "https://access.redhat.com/errata/RHSA-2026:21656"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:21695 vom 2026-06-04",
      "url" : "https://access.redhat.com/errata/RHSA-2026:21695"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:21690 vom 2026-06-04",
      "url" : "https://access.redhat.com/errata/RHSA-2026:21690"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:25096 vom 2026-06-10",
      "url" : "https://access.redhat.com/errata/RHSA-2026:25096"
    }, {
      "category" : "external",
      "summary" : "openSUSE Security Update OPENSUSE-SU-2026:11121-1 vom 2026-06-27",
      "url" : "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/YXMU6HIFZPUI7ZR7ROAX7CC2SGS6NAUU/"
    }, {
      "category" : "external",
      "summary" : "IBM Security Bulletin 7278708 vom 2026-07-01",
      "url" : "https://www.ibm.com/support/pages/node/7278708"
    } ],
    "source_lang" : "en-US",
    "title" : "nghttp2: Schwachstelle ermöglicht Denial of Service",
    "tracking" : {
      "current_release_date" : "2026-07-01T22:00:00.000+00:00",
      "generator" : {
        "date" : "2026-07-02T09:31:26.634+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.6.0"
        }
      },
      "id" : "WID-SEC-W-2026-0775",
      "initial_release_date" : "2026-03-17T23:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2026-03-17T23:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2026-03-18T23:00:00.000+00:00",
        "number" : "2",
        "summary" : "Referenz(en) aufgenommen: EUVD-2026-12919"
      }, {
        "date" : "2026-03-26T23:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2026-03-29T22:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2026-04-01T22:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2026-04-06T22:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates aufgenommen"
      }, {
        "date" : "2026-04-12T22:00:00.000+00:00",
        "number" : "7",
        "summary" : "Neue Updates von Rocky Enterprise Software Foundation, SUSE und Red Hat aufgenommen"
      }, {
        "date" : "2026-04-13T22:00:00.000+00:00",
        "number" : "8",
        "summary" : "Neue Updates von Red Hat, Oracle Linux, Amazon und Rocky Enterprise Software Foundation aufgenommen"
      }, {
        "date" : "2026-04-15T22:00:00.000+00:00",
        "number" : "9",
        "summary" : "Neue Updates von SUSE, Rocky Enterprise Software Foundation und Red Hat aufgenommen"
      }, {
        "date" : "2026-04-16T22:00:00.000+00:00",
        "number" : "10",
        "summary" : "Neue Updates von Rocky Enterprise Software Foundation und Red Hat aufgenommen"
      }, {
        "date" : "2026-04-19T22:00:00.000+00:00",
        "number" : "11",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-04-22T22:00:00.000+00:00",
        "number" : "12",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-04-29T22:00:00.000+00:00",
        "number" : "13",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-05-05T22:00:00.000+00:00",
        "number" : "14",
        "summary" : "Neue Updates von Red Hat und Ubuntu aufgenommen"
      }, {
        "date" : "2026-05-06T22:00:00.000+00:00",
        "number" : "15",
        "summary" : "Neue Updates von Ubuntu und Red Hat aufgenommen"
      }, {
        "date" : "2026-05-07T22:00:00.000+00:00",
        "number" : "16",
        "summary" : "Neue Updates von Red Hat und IBM aufgenommen"
      }, {
        "date" : "2026-05-14T22:00:00.000+00:00",
        "number" : "17",
        "summary" : "Neue Updates von Red Hat und Debian aufgenommen"
      }, {
        "date" : "2026-05-17T22:00:00.000+00:00",
        "number" : "18",
        "summary" : "Neue Updates von IBM aufgenommen"
      }, {
        "date" : "2026-05-18T22:00:00.000+00:00",
        "number" : "19",
        "summary" : "Neue Updates von IBM aufgenommen"
      }, {
        "date" : "2026-05-20T22:00:00.000+00:00",
        "number" : "20",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-05-27T22:00:00.000+00:00",
        "number" : "21",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-05-31T22:00:00.000+00:00",
        "number" : "22",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-06-04T22:00:00.000+00:00",
        "number" : "23",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-06-10T22:00:00.000+00:00",
        "number" : "24",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-06-28T22:00:00.000+00:00",
        "number" : "25",
        "summary" : "Neue Updates von openSUSE aufgenommen"
      }, {
        "date" : "2026-07-01T22:00:00.000+00:00",
        "number" : "26",
        "summary" : "Neue Updates von IBM aufgenommen"
      } ],
      "status" : "final",
      "version" : "26"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Amazon Linux 2",
        "product" : {
          "name" : "Amazon Linux 2",
          "product_id" : "398363",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:amazon:linux_2:-"
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      "category" : "vendor",
      "name" : "Amazon"
    }, {
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        "category" : "product_name",
        "name" : "Debian Linux",
        "product" : {
          "name" : "Debian Linux",
          "product_id" : "2951",
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            "cpe" : "cpe:/o:debian:debian_linux:-"
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      "category" : "vendor",
      "name" : "Debian"
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      "branches" : [ {
        "category" : "product_name",
        "name" : "Google Container-Optimized OS",
        "product" : {
          "name" : "Google Container-Optimized OS",
          "product_id" : "1607324",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:google:container-optimized_os:-"
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      "category" : "vendor",
      "name" : "Google"
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      "branches" : [ {
        "category" : "product_name",
        "name" : "IBM App Connect Enterprise",
        "product" : {
          "name" : "IBM App Connect Enterprise",
          "product_id" : "T051349",
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            "cpe" : "cpe:/a:ibm:app_connect_enterprise:-"
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          "category" : "product_name",
          "name" : "IBM MQ",
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            "name" : "IBM MQ",
            "product_id" : "T021398",
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          "category" : "product_version",
          "name" : "Agent",
          "product" : {
            "name" : "IBM MQ Agent",
            "product_id" : "T054280",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:ibm:mq:agent"
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        "category" : "product_name",
        "name" : "MQ"
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        "category" : "product_name",
        "name" : "IBM Power Hardware Management Console",
        "product" : {
          "name" : "IBM Power Hardware Management Console",
          "product_id" : "5114",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:ibm:hardware_management_console:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "IBM"
    }, {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version_range",
          "name" : "<1.68.1",
          "product" : {
            "name" : "Open Source nghttp2 <1.68.1",
            "product_id" : "T051878"
          }
        }, {
          "category" : "product_version",
          "name" : "1.68.1",
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    },
    "release_date" : "2026-03-17T23:00:00.000+00:00",
    "title" : "CVE-2026-27135"
  } ]
}