CVE-2026-27659

CVSS Score & Metrics

Base Score

4.6 / 10

Vector String

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

Vulnerability Description

Mattermost versions 11.2.x <= 11.2.2, 10.11.x <= 10.11.10, 11.4.x <= 11.4.0, 11.3.x <= 11.3.1 fail to properly validate CSRF tokens in the /api/v4/access_control_policies/{policy_id}/activate endpoint, which allows an attacker to trick an admin into changing access control policy active status via a crafted request.. Mattermost Advisory ID: MMSA-2026-00578

Vulnerability Details

Published Date

March 25, 2026

Last Modified

March 26, 2026

CWE ID

CWE-352

Source

NVD

Vendor

Mattermost

Product

Mattermost

External References

https://mattermost.com/security-updates

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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