What’s Vulnerable › Vulnerabilities
CVE-2023-6547: Playbooks access/modification by removed team member
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-12-12 · updated 2026-06-17
- Weakness: CWE-284
Description
Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team.
Affected products
- Mattermost: through 8.1.5; from 9.2.0 through 9.2.1
References
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