{
  "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 Angreifer kann mehrere Schwachstellen in Mattermost ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.",
      "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-2026-0504 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0504.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2026-0504 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0504"
    }, {
      "category" : "external",
      "summary" : "Mattermost Security Updates vom 2026-02-24",
      "url" : "https://mattermost.com/security-updates/#plugins"
    } ],
    "source_lang" : "en-US",
    "title" : "Mattermost Server und Plugins: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff",
    "tracking" : {
      "current_release_date" : "2026-03-26T23:00:00.000+00:00",
      "generator" : {
        "date" : "2026-03-27T09:11:27.962+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.5.0"
        }
      },
      "id" : "WID-SEC-W-2026-0504",
      "initial_release_date" : "2026-02-24T23:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2026-02-24T23:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2026-03-16T23:00:00.000+00:00",
        "number" : "2",
        "summary" : "Referenz(en) aufgenommen: EUVD-2026-12415"
      }, {
        "date" : "2026-03-25T23:00:00.000+00:00",
        "number" : "3",
        "summary" : "Referenz(en) aufgenommen: EUVD-2026-15805, EUVD-2026-15756, EUVD-2026-15806, EUVD-2026-15485"
      }, {
        "date" : "2026-03-26T23:00:00.000+00:00",
        "number" : "4",
        "summary" : "Referenz(en) aufgenommen: EUVD-2026-16240, EUVD-2026-16238, EUVD-2026-16234, EUVD-2026-16242, EUVD-2026-16245, EUVD-2026-16246, EUVD-2026-16236"
      } ],
      "status" : "final",
      "version" : "4"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version_range",
          "name" : "Server <11.5.0",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.5.0",
            "product_id" : "T051152"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.5.0",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.5.0",
            "product_id" : "T051152-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.5.0"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Server <11.2.3",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.2.3",
            "product_id" : "T051153"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.2.3",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.2.3",
            "product_id" : "T051153-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.2.3"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Server <10.11.11",
          "product" : {
            "name" : "Mattermost Mattermost Server <10.11.11",
            "product_id" : "T051154"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 10.11.11",
          "product" : {
            "name" : "Mattermost Mattermost Server 10.11.11",
            "product_id" : "T051154-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__10.11.11"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Server <11.4.1",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.4.1",
            "product_id" : "T051155"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.4.1",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.4.1",
            "product_id" : "T051155-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.4.1"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Server <11.3.2",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.3.2",
            "product_id" : "T051156"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.3.2",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.3.2",
            "product_id" : "T051156-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.3.2"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Server <11.2.4",
          "product" : {
            "name" : "Mattermost Mattermost Server <11.2.4",
            "product_id" : "T051157"
          }
        }, {
          "category" : "product_version",
          "name" : "Server 11.2.4",
          "product" : {
            "name" : "Mattermost Mattermost Server 11.2.4",
            "product_id" : "T051157-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:server__11.2.4"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "Plugins <10.11.12",
          "product" : {
            "name" : "Mattermost Mattermost Plugins <10.11.12",
            "product_id" : "T051161"
          }
        }, {
          "category" : "product_version",
          "name" : "Plugins 10.11.12",
          "product" : {
            "name" : "Mattermost Mattermost Plugins 10.11.12",
            "product_id" : "T051161-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mattermost:mattermost_server:plugins__10.11.12"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "Mattermost"
      } ],
      "category" : "vendor",
      "name" : "Mattermost"
    } ]
  },
  "vulnerabilities" : [ {
    "product_status" : {
      "known_affected" : [ "T051161", "T051153", "T051152", "T051155", "T051154", "T051157", "T051156" ]
    },
    "release_date" : "2026-02-24T23:00:00.000+00:00"
  } ]
}