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CVE-2026-4286 Playbooks Plugin fails to validate team transfers, allowing unauthorized removal of member access via playbook update
| Reporter | Title | Published | Views | Family All 13 |
|---|---|---|---|---|
 | CVE-2026-4286 | 18 May 202608:07 | – | attackerkb |
 | Mattermost 安全漏洞 | 18 May 202600:00 | – | cnnvd |
 | CVE-2026-4286 | 18 May 202608:07 | – | cve |
 | EUVD-2026-30750 | 18 May 202608:07 | – | euvd |
 | Mattermost doesn't check if {{team_id}} was being changed when updating playbooks | 18 May 202609:31 | – | github |
 | Mattermost Server 10.11.x < 10.11.14 / 11.5.x < 11.5.2 Vulnerability (MMSA-2025-00552) | 18 Jun 202600:00 | – | nessus |
 | CVE-2026-4286 | 18 May 202609:16 | – | nvd |
 | GHSA-GVG4-JHMR-6J23 Mattermost doesn't check if {{team_id}} was being changed when updating playbooks | 18 May 202609:31 | – | osv |
| GO-2026-5404 Mattermost doesn't check if {{team_id}} was being changed when updating playbooks in github.com/mattermost/mattermost-plugin-playbooks | 25 Jun 202622:34 | – | osv |
 | PT-2026-41653 | 18 May 202600:00 | – | ptsecurity |
10
[
{
"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"
}
]
}
]| Source | Link |
|---|---|
| mattermost | www.mattermost.com/security-updates |
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18 May 2026 08:07Current
CVSS 3.13.1
EPSS0.00143