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GO-2026-6281

Mattermost doesn't sanitize FileInfo.Name received from federated peers during shared channel file sync in github.com/mattermost/mattermost-server

Quick fix

GO-2026-6281 — github.com/mattermost/mattermost-server: upgrade to the fixed version with the command below.

go get github.com/mattermost/mattermost-server@v10.11.17+incompatible

Details

Mattermost doesn't sanitize FileInfo.Name received from federated peers during shared channel file sync in github.com/mattermost/mattermost-server

Enter the version of the package you're using.

Introduced in: 10.11.0+incompatible Fixed in: 10.11.17+incompatible

Fix go get github.com/mattermost/mattermost-server@v10.11.17+incompatible

Introduced in: 0

No fixed version published yet for github.com/mattermost/mattermost-server/v5 (go modules). Pin to a known-safe version or switch to an alternative.

Introduced in: 0

No fixed version published yet for github.com/mattermost/mattermost-server/v6 (go modules). Pin to a known-safe version or switch to an alternative.

Introduced in: 8.0.0-20250731163400-5b955468ea1e Fixed in: 8.0.0-20260423180926-c021eeaff8f0

Fix go get github.com/mattermost/mattermost/server/v8@v8.0.0-20260423180926-c021eeaff8f0