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CVE-2026-27659

CSRF vulnerability in UpdateAccessControlPolicyActiveStatus endpoint PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Mattermost / Mattermostaffected 11.2.0 through 11.2.2; affected 10.11.0 through 10.11.10; affected 11.4.0 through 11.4.0; affected 11.3.0 through 11.3.1; unaffected 11.5.0; unaffected 11.2.3; unaffected 10.11.11; unaffected 11.4.1; unaffected 11.3.2

CWE

CWE-352

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.