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PT-2026-42747

🗓️ 22 May 2026 00:00:00Reported by Positive TechnologiesType 
ptsecurity
 ptsecurity
🔗 dbugs.ptsecurity.com👁 39 Views

Mattermost fails to archive channel before removing persistent notifications, enabling authenticated users to crash the server.

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github
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Mattermost doesn't archive the channel before removing persistent notifications
26 May 202613:30
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mend
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30 Jul 2026 00:00Current
7.1High risk
Vulners AI Score7.1
CVSS 26.8
CVSS 3.15.3 - 6.5
EPSS0.00172
SSVC
39