{
  "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" : "Mattermost ist ein webbasierter Instant-Messaging-Dienst.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Mattermost Server ausnutzen, um einen Denial of Service Angriff durchzuführen oder Sicherheitsmaßnahmen zu umgehen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- 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-2026-3519 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3519.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2026-3519 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3519"
    }, {
      "category" : "external",
      "summary" : "Mattermost Security Updates vom 2026-09-22",
      "url" : "https://docs.mattermost.com/security-guide/security-updates"
    }, {
      "category" : "external",
      "summary" : "EU Vulnerability Database vom 2026-09-22",
      "url" : "https://euvd.enisa.europa.eu/enisa/EUVD-2026-84378"
    }, {
      "category" : "external",
      "summary" : "EU Vulnerability Database vom 2026-09-22",
      "url" : "https://euvd.enisa.europa.eu/enisa/EUVD-2026-84869"
    }, {
      "category" : "external",
      "summary" : "EU Vulnerability Database vom 2026-09-22",
      "url" : "https://euvd.enisa.europa.eu/enisa/EUVD-2026-84870"
    } ],
    "source_lang" : "en-US",
    "title" : "Mattermost Server: Mehrere Schwachstellen",
    "tracking" : {
      "current_release_date" : "2026-09-22T22:00:00.000+00:00",
      "generator" : {
        "date" : "2026-09-23T11:29:28.114+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.6.0"
        }
      },
      "id" : "WID-SEC-W-2026-3519",
      "initial_release_date" : "2026-09-22T22:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2026-09-22T22:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      } ],
      "status" : "final",
      "version" : "1"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version_range",
          "name" : "Server <11.11.0",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.11.0",
            "product_id" : "T060009"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.11.0",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.11.0",
            "product_id" : "T060009-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.11.0"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Server <11.9.2",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.9.2",
            "product_id" : "T060010"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.9.2",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.9.2",
            "product_id" : "T060010-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.9.2"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Server <11.8.6",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.8.6",
            "product_id" : "T060011"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.8.6",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.8.6",
            "product_id" : "T060011-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.8.6"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Server <11.7.11",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.7.11",
            "product_id" : "T060012"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.7.11",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.7.11",
            "product_id" : "T060012-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.7.11"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Server <11.10.2",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.10.2",
            "product_id" : "T060013"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.10.2",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.10.2",
            "product_id" : "T060013-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.10.2"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "Mattermost"
      } ],
      "category" : "vendor",
      "name" : "Mattermost"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2026-95666",
    "product_status" : {
      "known_affected" : [ "T060009", "T060012", "T060011", "T060010", "T060013" ]
    },
    "release_date" : "2026-09-22T22:00:00.000+00:00",
    "title" : "CVE-2026-95666"
  }, {
    "cve" : "CVE-2026-96259",
    "product_status" : {
      "known_affected" : [ "T060009", "T060012", "T060011", "T060010", "T060013" ]
    },
    "release_date" : "2026-09-22T22:00:00.000+00:00",
    "title" : "CVE-2026-96259"
  }, {
    "cve" : "CVE-2026-96260",
    "product_status" : {
      "known_affected" : [ "T060009", "T060012", "T060011", "T060010", "T060013" ]
    },
    "release_date" : "2026-09-22T22:00:00.000+00:00",
    "title" : "CVE-2026-96260"
  } ]
}