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EUVD-2026-30745

🗓️ 18 May 2026 07:00:24Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 6 Views

Mattermost plugins fail to validate namespaces, enabling subscriptions to groups with matching prefixes.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-6342
18 May 202607:00
attackerkb
CNNVD
Mattermost Plugins 安全漏洞
18 May 202600:00
cnnvd
CVE
CVE-2026-6342
18 May 202607:00
cve
Cvelist
CVE-2026-6342 Group prefix matching bypass for subscriptions
18 May 202607:00
cvelist
NVD
CVE-2026-6342
18 May 202608:16
nvd
Positive Technologies
PT-2026-41647
18 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-6342
5 Jun 202619:32
redhatcve
Snyk
Incorrect Authorization
18 May 202609:45
snyk
Vulnrichment
CVE-2026-6342 Group prefix matching bypass for subscriptions
18 May 202607:00
vulnrichment
[
  {
    "enisaIdVendor": [
      {
        "id": "f9d835c5-b071-3e77-a48e-4c8a9c54abe2",
        "vendor": {
          "name": "Mattermost"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "18364b70-29e2-30ea-873c-97c93ca6882a",
        "product": {
          "name": "Mattermost"
        },
        "product_version": "0 ≤10.13.11"
      },
      {
        "id": "4260659a-520f-3e18-8436-57273291361e",
        "product": {
          "name": "Mattermost"
        },
        "product_version": "0 ≤11.3.4"
      },
      {
        "id": "488ad13d-b5d5-3410-baf2-abbd95d5260c",
        "product": {
          "name": "Mattermost"
        },
        "product_version": "0 ≤11.1.5"
      }
    ]
  }
]

Data

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18 May 2026 14:32Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3
EPSS0.00031
SSVC
6