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CVE-2026-3117

🗓️ 18 May 2026 08:09:57Reported by MattermostType 
cve
 cve
🔗 web.nvd.nist.gov👁 9 Views

Non-admin users can uninstall instances or set up webhooks due to plugin permission flaws.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-3117
18 May 202608:09
attackerkb
CNNVD
Mattermost Plugins 安全漏洞
18 May 202600:00
cnnvd
Cvelist
CVE-2026-3117 Instance and webhook GitLab plugin commands were able to be run by non-admin users
18 May 202608:09
cvelist
EUVD
EUVD-2026-30748
18 May 202608:09
euvd
NVD
CVE-2026-3117
18 May 202609:16
nvd
Positive Technologies
PT-2026-41650
18 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-3117
5 Jun 202619:37
redhatcve
Vulnrichment
CVE-2026-3117 Instance and webhook GitLab plugin commands were able to be run by non-admin users
18 May 202608:09
vulnrichment
NVD
Node
mattermostmattermost_serverRange10.13.010.13.11
OR
mattermostmattermost_serverRange11.1.011.1.5
OR
mattermostmattermost_serverRange11.3.011.3.4
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "11.1.5",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.13.11",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "11.3.4",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "version": "11.6.0",
        "status": "unaffected"
      },
      {
        "version": "11.5.2",
        "status": "unaffected"
      },
      {
        "version": "10.11.14",
        "status": "unaffected"
      },
      {
        "version": "11.4.4",
        "status": "unaffected"
      }
    ]
  }
]

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29 May 2026 19:12Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.16.5
EPSS0.00035
SSVC
9