Mattermost: >> Mattermost Server >> 11.7.11 Security Vulnerabilities
Mattermost versions 11.7.x <= 11.7.11 fail to validate null elements when decoding playbook import conditions which allows an authenticated attacker to crash the Playbooks plugin instance-wide via a crafted import request containing a null condition. Mattermost Advisory ID: MMSA-2026-00709
CVSS Score
4.3
EPSS Score
0.003
Published
2026-10-22