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CVE-2026-4286 Playbooks Plugin fails to validate team transfers, allowing unauthorized removal of member access via playbook update

🗓️ 18 May 2026 08:07:06Reported by MattermostType 
cvelist
 cvelist
🔗 www.cve.org👁 35 Views

CVE-2026-4286: Playbooks plugin fails to validate team changes, allowing PUT updates that bypass member restrictions.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-4286
18 May 202608:07
attackerkb
CNNVD
Mattermost 安全漏洞
18 May 202600:00
cnnvd
CVE
CVE-2026-4286
18 May 202608:07
cve
EUVD
EUVD-2026-30750
18 May 202608:07
euvd
Github Security Blog
Mattermost doesn't check if {{team_id}} was being changed when updating playbooks
18 May 202609:31
github
NVD
CVE-2026-4286
18 May 202609:16
nvd
OSV
GHSA-GVG4-JHMR-6J23 Mattermost doesn't check if {{team_id}} was being changed when updating playbooks
18 May 202609:31
osv
Positive Technologies
PT-2026-41653
18 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-4286
5 Jun 202619:45
redhatcve
Snyk
Incorrect Authorization
18 May 202611:47
snyk
Rows per page
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "11.5.1",
        "status": "affected",
        "version": "11.5.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.11.13",
        "status": "affected",
        "version": "10.11.0",
        "versionType": "semver"
      },
      {
        "version": "11.6.0",
        "status": "unaffected"
      },
      {
        "version": "11.5.2",
        "status": "unaffected"
      },
      {
        "version": "10.11.14",
        "status": "unaffected"
      }
    ]
  }
]

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