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CVE-2026-8075 Posting a malicious markdown image crashes the Mattermost Desktop App

🗓️ 17 Jul 2026 10:05:06Reported by MattermostType 
cvelist
 cvelist
🔗 www.cve.org👁 8 Views

Mattermost desktop app crashes when a user posts a malicious markdown image missing headers due to a null check failure.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-8075
17 Jul 202610:05
attackerkb
CVE
CVE-2026-8075
17 Jul 202610:05
cve
EUVD
EUVD-2026-45157
17 Jul 202610:05
euvd
NVD
CVE-2026-8075
17 Jul 202611:17
nvd
Positive Technologies
PT-2026-60737
17 Jul 202600:00
ptsecurity
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "5.5.13",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "6.0.2",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "version": "6.3.0",
        "status": "unaffected"
      },
      {
        "version": "5.13.6.0",
        "status": "unaffected"
      },
      {
        "version": "6.2.1.0",
        "status": "unaffected"
      }
    ]
  }
]

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