LOW3.1
GO-2026-4495
Mattermost doesn't properly validate channel membership at the time of data retrieval in github.com/mattermost/mattermost-server
Quick fix
GO-2026-4495 — github.com/mattermost/mattermost-server: upgrade to the fixed version with the command below.
go get github.com/mattermost/mattermost-server@v10.11.10+incompatibleDetails
Mattermost doesn't properly validate channel membership at the time of data retrieval 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: 10.11.10+incompatibleFix
go get github.com/mattermost/mattermost-server@v10.11.10+incompatible