CVE-2026-13411
Null condition in Playbooks import crashes the plugin
- State
- Published
- Severity
- 4.3 Medium
- Published
- Oct 22, 2026
- Updated
- Oct 22, 2026
- Reserved
- Jun 26, 2026
Description
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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L | Mattermost |
Weaknesses
- CWE-754 Improper Check for Unusual or Exceptional Conditions
Affected Products
| Product | Versions |
|---|---|
MattermostMattermost |
|
References
- MMSA-2026-00709vendor-advisory
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