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CVE-2026-9597

🗓️ 13 Jul 2026 08:17:36Reported by MattermostType 
cve
 cve
🔗 web.nvd.nist.gov👁 22 Views

Deactivated guest accounts can authenticate via magic-link tokens in Mattermost REST API login on affected versions 11.7.x and 11.6.x.

Related
Detection
Affected
Refs
NVD
Node
OR
mattermostmattermost_serverRange11.6.011.6.5
mattermostmattermost_serverRange11.7.011.7.3
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "11.7.2",
        "status": "affected",
        "version": "11.7.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "11.6.4",
        "status": "affected",
        "version": "11.6.0",
        "versionType": "semver"
      },
      {
        "version": "11.8.0",
        "status": "unaffected"
      },
      {
        "version": "11.7.3",
        "status": "unaffected"
      },
      {
        "version": "11.6.5",
        "status": "unaffected"
      }
    ]
  }
]

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13 Jul 2026 20:53Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.15.4
EPSS0.00141
SSVC
22