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EUVD-2026-12518

🗓️ 16 Mar 2026 21:34:33Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 18 Views

Mattermost 10.11.x to 10.11.10 fail to validate permissions in team member roles API, guest demotion allowed.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-26230
16 Mar 202620:19
–attackerkb
bdu_fstec
BDU FSTEC
Mattermost Access Control Privilege Reduction
13 May 202600:00
–bdu_fstec
cnnvd
CNNVD
Mattermost security vulnerabilities
16 Mar 202600:00
–cnnvd
cve
CVE
CVE-2026-26230
16 Mar 202620:19
–cve
cvelist
Cvelist
CVE-2026-26230 Team Admin Privilege Escalation to Demote Members to Guest
16 Mar 202620:19
–cvelist
mend
Mend
CVE-2026-26230
16 Mar 202620:19
–mend
nvd
NVD
CVE-2026-26230
16 Mar 202621:16
–nvd
ptsecurity
Positive Technologies
PT-2026-25813
13 Feb 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-26230: Incorrect Authorization
16 Mar 202600:00
–rapid7
redhatcve
RedhatCVE
CVE-2026-26230
16 Mar 202622:19
–redhatcve
Rows per page
[
  {
    "enisaIdVendor": [
      {
        "id": "1aa6c537-272a-3f02-90e1-155f9de3bfb7",
        "vendor": {
          "name": "Mattermost"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "1aa6c537-272a-3f02-90e1-155f9de3bfb7",
        "product": {
          "name": "Mattermost"
        },
        "product_version": ""
      },
      {
        "id": "3272dc4b-3cf4-3af8-889c-bc8f8b061671",
        "product": {
          "name": "Mattermost"
        },
        "product_version": "10.11.0 ≤10.11.10"
      }
    ]
  }
]

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16 Mar 2026 21:34Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.13.8
EPSS0.00265
18