CVE-2026-7184: Mattermost doesn't sanitize the Remote Cluster API response on PATCH operations
(updated )
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
- github.com/advisories/GHSA-9p44-r552-4wp9
- github.com/mattermost/mattermost/commit/1a0643df00c1f51a3b7e919eec034eaf955f612f
- github.com/mattermost/mattermost/commit/6fd49f56b5920569218fd2fc76d8ae802942f274
- github.com/mattermost/mattermost/commit/bd8fc92226726da06c8fabaef568cc9ebaee1cb8
- github.com/mattermost/mattermost/commit/c5e67e28271c23cb585fe1a30ae81defcde848d6
- github.com/mattermost/mattermost/commit/cad3e8e51a4d8627af6442f9df8ae3667fac7fc1
- github.com/mattermost/mattermost/pull/36288
- github.com/mattermost/mattermost/pull/36306
- github.com/mattermost/mattermost/pull/36310
- github.com/mattermost/mattermost/pull/36311
- github.com/mattermost/mattermost/pull/36313
- github.com/mattermost/mattermost/releases/tag/v10.11.16
- github.com/mattermost/mattermost/releases/tag/v11.5.5
- github.com/mattermost/mattermost/releases/tag/v11.6.2
- github.com/mattermost/mattermost/releases/tag/v11.7.0
- mattermost.com/security-updates
- nvd.nist.gov/vuln/detail/CVE-2026-7184
Code Behaviors & Features
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