{
  "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"
    }
  ]
}