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Medium severity4.3NVD Advisory· Published Oct 22, 2026

CVE-2026-13411

CVE-2026-13411

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

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Affected products

2

Patches

Vulnerability mechanics

References

1

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