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EUVD-2026-43305

🗓️ 13 Jul 2026 09:31:43Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 4 Views

Mattermost fails to invalidate authorization tokens after user deactivation, enabling token abuse.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
CVE
CVE-2026-9571
13 Jul 202607:50
cve
Cvelist
CVE-2026-9571 Deactivated user accounts can continue to obtain valid OAuth access tokens via refresh token grant in Mattermost
13 Jul 202607:50
cvelist
NVD
CVE-2026-9571
13 Jul 202609:16
nvd
Positive Technologies
PT-2026-57662
13 Jul 202600:00
ptsecurity
[
  {
    "enisaIdVendor": [
      {
        "id": "02913c0f-4735-33e0-808b-8574391475c7",
        "vendor": {
          "name": "Mattermost"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "3d110522-a9aa-3c6c-91a6-8a5cb37ac13f",
        "product": {
          "name": "Mattermost",
          "vendor": {
            "name": "Mattermost"
          }
        },
        "product_version": "11.6.0 ≤11.6.4"
      },
      {
        "id": "6825edc9-b2e7-3005-a12f-2de1235fbed6",
        "product": {
          "name": "Mattermost",
          "vendor": {
            "name": "Mattermost"
          }
        },
        "product_version": "11.7.0 ≤11.7.2"
      },
      {
        "id": "ef0d5a1c-8a33-3473-bd15-b3c0bb3bc92c",
        "product": {
          "name": "Mattermost",
          "vendor": {
            "name": "Mattermost"
          }
        },
        "product_version": "10.11.0 ≤10.11.19"
      }
    ]
  }
]

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13 Jul 2026 09:31Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.15.9
4