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CVE-2026-12284

🗓️ 17 Sep 2026 15:11:52Reported by MattermostType 
cve
 cve
🔗 web.nvd.nist.gov👁 23 Views

Mattermost Desktop App missing IPC sender validation in leaveCall handler allows call disconnection.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-12284 Mattermost Desktop App Missing IPC Sender Validation in Calls Leave Handler
17 Sep 202615:11
–cvelist
euvd
EUVD
EUVD-2026-81680
17 Sep 202615:11
–euvd
nvd
NVD
CVE-2026-12284
17 Sep 202616:17
–nvd
ptsecurity
Positive Technologies
PT-2026-94361
17 Sep 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-12284: Origin Validation Error
17 Sep 202600:00
–rapid7
Vulners
Node
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "6.2.2",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "version": "6.3.0",
        "status": "unaffected"
      },
      {
        "version": "6.2.3.0",
        "status": "unaffected"
      }
    ]
  }
]

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18 Sep 2026 13:46Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.13.7
EPSS0.00131
23