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Mattermost has an Incorrect Authorization issue

🗓️ 26 Mar 2026 12:30:29Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 2 Views

Mattermost permits a remote cluster to grant private-team access via membership sync (Advisory MMSA-2026-00574).

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-4274
26 Mar 202610:43
attackerkb
Circl
CVE-2026-3109
27 Mar 202603:00
circl
Circl
CVE-2026-3112
27 Mar 202603:00
circl
Circl
CVE-2026-3113
27 Mar 202603:00
circl
Circl
CVE-2026-3114
27 Mar 202603:00
circl
Circl
CVE-2026-3115
27 Mar 202603:00
circl
Circl
CVE-2026-3116
27 Mar 202603:00
circl
Circl
CVE-2026-4274
16 Apr 202611:35
circl
CNNVD
Mattermost 安全漏洞
26 Mar 202600:00
cnnvd
CVE
CVE-2026-4274
26 Mar 202610:43
cve
Rows per page
Vulners
Node
mattermostmattermostRange8.0.0-20260105080200-d27a2195068d8.0.0-20260217110922-b7d4a1f1f59bgo
OR
mattermostmattermostRange10.11.0-rc110.11.1go
OR
mattermostmattermostRange11.2.0-rc111.2.3go
OR
mattermostmattermostRange11.3.0-rc111.3.2go
OR
mattermostmattermostRange11.4.0-rc111.4.1go

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31 Mar 2026 23:01Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.4
EPSS0.0004
SSVC
2