PT-2026-121373

CVE-2026-13411

Published

2026-10-22

Updated

2026-10-22

Description by

CVSS 3.1

4.3

Medium

MetricsAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Mattermost versions 11.7.0 through 11.7.11

Description An issue exists where the software fails to validate null elements when decoding playbook import conditions. This allows an authenticated attacker to cause an instance-wide crash of the Playbooks plugin by sending a crafted import request that contains a null condition.

Recommendations Update Mattermost to a version later than 11.7.11.

Exploitability

Exploit

Fix

Impacts

Researchers

Alimursaliyev

Vendors

Affected products

Weakness enumeration

CWE-754: Improper Check for Unusual or Exceptional Conditions

Related identifiers