What’s Vulnerable › Vulnerabilities
CVE-2024-31859: Member promoted to channel admin via playbooks run linking to channel
- Severity: medium (CVSS 6.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-05-26 · updated 2026-06-17
- Weakness: CWE-284
Description
Mattermost versions 9.5.x <= 9.5.3, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to perform proper authorization checks which allows a member running a playbook in an existing channel to be promoted to a channel admin
Affected products
- Mattermost: from 8.1.0 before 8.1.13; from 9.5.0 before 9.5.4; from 9.6.0 before 9.6.2 — fixed in 8.1.13, 9.5.4, 9.6.2
How to fix
Upgrade to a fixed version: Mattermost 8.1.13, 9.5.4, 9.6.2. Check the vendor advisory for mitigations.
References
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