CVE-2026-9812 | Mattermost up to 10.11.22/11.7.7/11.8.4/11.9.0 Playbooks input validation

September 14, 2026 Yanac

A vulnerability has been found in Mattermost up to 10.11.22/11.7.7/11.8.4/11.9.0 and classified as problematic. Affected by this issue is some unknown functionality of the component Playbooks. This manipulation causes improper input validation.

This vulnerability is registered as CVE-2026-9812. Remote exploitation of the attack is possible. No exploit is available.

The affected component should be upgraded.VulDB Recent EntriesRead More