CVE-2023-2791: Mattermost

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

When creating a playbook run via the /dialog API, Mattermost fails to validate all parameters, allowing an authenticated attacker to edit an arbitrary channel post.

Affected products

• Mattermost Mattermost: from 7.7.0, up to and including 7.7.3; from 7.8.0, up to and including 7.8.2; from 7.9.0, up to and including 7.9.1; version 7.10.0 only

Published 2023-06-16. Last modified 2026-06-17.