CVE WatchJul 13, 2026

CVE-2026-6541

Mattermost versions 11.7.x <= 11.7.1, 11.6.x <= 11.6.4, 10.11.x <= 10.11.19 fail to restrict metric configuration changes to the playbook be

CVSS

4.3

Medium

EPSS

0.2%

KEV

—

Exploit Today

0-100

Published: Jul 13, 2026 · Last modified: Jul 13, 2026 · CWE-639

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-07-142026-07-17

Technical description

Mattermost versions 11.7.x <= 11.7.1, 11.6.x <= 11.6.4, 10.11.x <= 10.11.19 fail to restrict metric configuration changes to the playbook being saved, which allows an authenticated user with team access to alter another user’s playbook metric settings via a crafted import or update request with a foreign metric ID. Mattermost Advisory ID: MMSA-2026-00653

Official references

mattermost.comhttps://mattermost.com/security-updates

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