CVE-2026-27659

The record

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

Affected packages

Related vulnerabilities

• CVE-2026-96388 Cross-Site Request Forgery (CSRF) vulnerability in Drupal Tawk.to - Live chat application… CWE-352
• CVE-2026-96374 Cross-Site Request Forgery (CSRF) vulnerability in Drupal Project Browser allows Cross… CWE-352
• CVE-2026-114719 Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSRF validation… CWE-352
• CVE-2026-114662 Obot before 0.26.0 contains an authentication bypass vulnerability in the CLI login flow… CWE-352
• CVE-2026-111883 Locust through 2.46.7 contains a cross-site request forgery vulnerability that allows… CWE-352
• CVE-2026-62139 Unauthenticated Cross Site Request Forgery (CSRF) in Site Kit by Google <= 1.186.0… CWE-352
• CVE-2026-62133 Subscriber Cross Site Request Forgery (CSRF) in RTMKit <= 2.1.5 versions. CWE-352
• CVE-2026-89245 WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a cross-site… CWE-352