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PT-2026-28642

🗓️ 26 Mar 2026 00:00:00Reported by Positive TechnologiesType 
ptsecurity
 ptsecurity
🔗 dbugs.ptsecurity.com

Mattermost allows remote cluster to grant user access to a private team via crafted membership sync.

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Refs
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Mattermost 安全漏洞
26 Mar 202600:00
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CVE-2026-4274
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26 Mar 2026 00:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.4
EPSS0.0004
SSVC
0