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CVE-2026-6342: Incorrect Authorization

🗓️ 18 May 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com

Incorrect Authorization in Mattermost Plugins <=11.5 allows plugin users to bypass whitelists.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-6342
18 May 202607:00
–attackerkb
cnnvd
CNNVD
Mattermost Plugins 安全漏洞
18 May 202600:00
–cnnvd
cve
CVE
CVE-2026-6342
18 May 202607:00
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cvelist
Cvelist
CVE-2026-6342 Group prefix matching bypass for subscriptions
18 May 202607:00
–cvelist
euvd
EUVD
EUVD-2026-30745
18 May 202607:00
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nvd
NVD
CVE-2026-6342
18 May 202608:16
–nvd
ptsecurity
Positive Technologies
PT-2026-41647
18 May 202600:00
–ptsecurity
redhatcve
RedhatCVE
CVE-2026-6342
5 Jun 202619:32
–redhatcve
snyk
Snyk
Incorrect Authorization
18 May 202609:45
–snyk
snyk
Snyk
Incorrect Authorization
18 May 202609:45
–snyk
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29 May 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3
EPSS0.00254
SSVC
0