CVE-2026-6541

Unscoped updates to other playbooks' metric configuration

State: Published
Severity: 4.3 Medium
Published: Jul 13, 2026
Updated: Jul 13, 2026
Reserved: Apr 17, 2026

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

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:L/A:N	Mattermost

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

Product	Versions
MattermostMattermost	11.7.0 through 11.7.1Affected 11.6.0 through 11.6.4Affected 10.11.0 through 10.11.19Affected 11.8.0Not affected 11.7.2Not affected 11.6.5Not affected 10.11.20Not affected

References

MMSA-2026-00653vendor-advisory

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