CVE-2026-13411

MediumCVSS 4.3/10Last modified Oct 22, 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

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-754

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
Mattermost	Mattermost	>= 11.7.0, <= 11.7.11

References

https://mattermost.com/security-updates

Timeline

Published: Oct 22, 2026
Last modified: Oct 22, 2026
NVD status: Awaiting Analysis

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