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Mattermost doesn't enforce request body size limits on plugin HTTP endpoints

🗓️ 26 May 2026 13:30:15Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 3 Views

Mattermost fails to enforce size limits on plugin endpoints, enabling denial of service.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-5308
22 May 202610:20
attackerkb
Circl
CVE-2026-5308
22 May 202612:43
circl
CNNVD
Mattermost 安全漏洞
22 May 202600:00
cnnvd
CVE
CVE-2026-5308
22 May 202610:20
cve
Cvelist
CVE-2026-5308 Missing request body size limits on Zoom plugin HTTP endpoints
22 May 202610:20
cvelist
EUVD
EUVD-2026-31425
22 May 202610:20
euvd
NVD
CVE-2026-5308
22 May 202611:16
nvd
OSV
GHSA-JMVR-R5HM-FXFR Mattermost doesn't enforce request body size limits on plugin HTTP endpoints
26 May 202613:30
osv
Positive Technologies
PT-2026-42749
22 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-5308
5 Jun 202619:35
redhatcve
Rows per page
Vulners
Node
mattermostmattermost-plugin-githubRange<1.0.1-0.20260410143745-9b41b1fd43c4go
OR
mattermostmattermost-serverRange10.11.010.11.15go
OR
mattermostmattermost-serverRange11.4.011.4.5go
OR
mattermostmattermost-serverRange11.5.011.5.4go
OR

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29 Jun 2026 22:41Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.9 - 7.5
EPSS0.00254
SSVC
3