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CVE-2026-86348 MS Calendar plugin: unrecovered handler panics from malformed post-action requests could crash the plugin process

🗓️ 14 Sep 2026 13:52:24Reported by MattermostType 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

MS Calendar plugin for Mattermost: malformed post-action request causes unrecovered panic and crash.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-86348
14 Sep 202614:49
circl
cve
CVE
CVE-2026-86348
14 Sep 202613:52
cve
euvd
EUVD
EUVD-2026-77481
14 Sep 202613:52
euvd
nvd
NVD
CVE-2026-86348
14 Sep 202614:17
nvd
ptsecurity
Positive Technologies
PT-2026-91238
14 Sep 202600:00
ptsecurity
vulnrichment
Vulnrichment
CVE-2026-86348 MS Calendar plugin: unrecovered handler panics from malformed post-action requests could crash the plugin process
14 Sep 202613:52
vulnrichment
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "<=11.9 11.0.9 11.4.8 11.7.7 10.22.11.0",
        "status": "affected",
        "version": "<=11.9 11.0.9 11.4.8 11.7.7 10.22.11.0",
        "versionType": "semver"
      },
      {
        "version": "11.10.0",
        "status": "unaffected"
      },
      {
        "version": "11.9.1",
        "status": "unaffected"
      },
      {
        "version": "11.8.5",
        "status": "unaffected"
      },
      {
        "version": "11.7.8",
        "status": "unaffected"
      },
      {
        "version": "10.11.23",
        "status": "unaffected"
      }
    ]
  }
]

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