| Package | Affected versions | Patched versions |
|---|---|---|
| mattermost server | ≥ 11.7.0, < 11.7.12 | 11.7.12 |
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
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