csaf_bsi_white:wid-sec-w-2026-3519
csaf_bsi_white
Description
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Mattermost Server ausnutzen, um einen Denial of Service Angriff durchzuführen oder Sicherheitsmaßnahmen zu umgehen.
Timeline
- Published
- 2026-09-22 22:00 UTC
- Last Modified
- 2026-09-22
CVSS Details
CVSS details not available.
Affected Products
No product information available.
References
No references available.
Linked Vulnerabilities
No linked vulnerabilities found.
{
"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": {
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"version": "1.6.0"
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"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"
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},
{
"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"
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},
{
"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"
}
]
}