~ / search / GHSA-9p44-r552-4wp9

GHSA-9p44-r552-4wp9

Mattermost doesn't sanitize the Remote Cluster API response on PATCH operations

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-7184

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost-server >= 11.6.0, < 11.6.1 11.6.1
Go github.com/mattermost/mattermost-server >= 11.5.0, < 11.5.5 11.5.5
Go github.com/mattermost/mattermost-server >= 10.11.0, < 10.11.16 10.11.16
Go github.com/mattermost/mattermost/server/v8 >= 8.0.0-20250731163400-5b955468ea1e, < 8.0.0-20260428142921-bd8fc9222672 8.0.0-20260428142921-bd8fc9222672

Details

As written in the advisory (Markdown source, shown as plain text).

Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15 fail to sanitize the Remote Cluster API response on PATCH operations, which allows authenticated users with the {{manage_secure_connections}} permission to obtain remote cluster authentication tokens via a PATCH request to the remote cluster endpoint. Mattermost Advisory ID: MMSA-2026-00662

References

External links from the advisory. They lead to third-party sites.