MEDIUM6.5
GO-2026-6282
Mattermost doesn't sanitize the Remote Cluster API response on PATCH operations in github.com/mattermost/mattermost-server
Quick fix
GO-2026-6282 — github.com/mattermost/mattermost-server: upgrade to the fixed version with the command below.
go get github.com/mattermost/mattermost-server@v10.11.16+incompatibleDetails
Mattermost doesn't sanitize the Remote Cluster API response on PATCH operations in github.com/mattermost/mattermost-server
Are you affected?
Enter the version of the package you're using.
Affected packages
Go/github.com/mattermost/mattermost-server
Introduced in:
10.11.0+incompatibleFixed in: 10.11.16+incompatibleFix
go get github.com/mattermost/mattermost-server@v10.11.16+incompatibleGo/github.com/mattermost/mattermost-server/v5
Introduced in:
0No fixed version published yet for github.com/mattermost/mattermost-server/v5 (go modules). Pin to a known-safe version or switch to an alternative.
Go/github.com/mattermost/mattermost-server/v6
Introduced in:
0No fixed version published yet for github.com/mattermost/mattermost-server/v6 (go modules). Pin to a known-safe version or switch to an alternative.
Go/github.com/mattermost/mattermost/server/v8
Introduced in:
8.0.0-20250731163400-5b955468ea1eFixed in: 8.0.0-20260428142921-bd8fc9222672Fix
go get github.com/mattermost/mattermost/server/v8@v8.0.0-20260428142921-bd8fc9222672References
- https://github.com/advisories/GHSA-9p44-r552-4wp9[ADVISORY]
- https://nvd.nist.gov/vuln/detail/CVE-2026-7184[ADVISORY]
- https://github.com/mattermost/mattermost/commit/1a0643df00c1f51a3b7e919eec034eaf955f612f[WEB]
- https://github.com/mattermost/mattermost/commit/6fd49f56b5920569218fd2fc76d8ae802942f274[WEB]
- https://github.com/mattermost/mattermost/commit/bd8fc92226726da06c8fabaef568cc9ebaee1cb8[WEB]
- https://github.com/mattermost/mattermost/commit/c5e67e28271c23cb585fe1a30ae81defcde848d6[WEB]
- https://github.com/mattermost/mattermost/commit/cad3e8e51a4d8627af6442f9df8ae3667fac7fc1[WEB]
- https://github.com/mattermost/mattermost/pull/36288[WEB]
- https://github.com/mattermost/mattermost/pull/36306[WEB]
- https://github.com/mattermost/mattermost/pull/36310[WEB]
- https://github.com/mattermost/mattermost/pull/36311[WEB]
- https://github.com/mattermost/mattermost/pull/36313[WEB]
- https://github.com/mattermost/mattermost/releases/tag/v10.11.16[WEB]
- https://github.com/mattermost/mattermost/releases/tag/v11.5.5[WEB]
- https://github.com/mattermost/mattermost/releases/tag/v11.6.2[WEB]
- https://github.com/mattermost/mattermost/releases/tag/v11.7.0[WEB]
- https://mattermost.com/security-updates[WEB]