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Mattermost allows system administrators to read arbitrary host files via malicious AdvancedLoggingJSON configuration

🗓️ 26 Mar 2026 18:31:42Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 8 Views

Mattermost reads arbitrary host files via malicious AdvancedLoggingJSON in older versions.

Related
Detection
Refs
Vulners
Node
mattermostmattermostRange8.0.0-20260105080200-d27a2195068d8.0.0-20260217110922-b7d4a1f1f59bgo
OR
mattermostmattermostRange10.11.0-rc110.11.12go
OR
mattermostmattermostRange11.2.0-rc111.2.4go
OR
mattermostmattermostRange11.3.0-rc111.3.2go
OR
mattermostmattermostRange11.4.0-rc111.4.1go

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31 Mar 2026 23:04Current
6Medium risk
Vulners AI Score6
CVSS 3.14.9 - 6.8
EPSS0.00421
SSVC
8