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LOW3.1

GHSA-xgxj-j98c-59rv

Mattermost fails to properly restrict the access of files attached to posts

Quick fix

GHSA-xgxj-j98c-59rv — github.com/mattermost/mattermost/server/v8: upgrade to the fixed version with the command below.

go get github.com/mattermost/mattermost/server/v8@v9.4.2

Details

Mattermost fails to properly restrict the access of files attached to posts in an archived channel, resulting in members being able to access files of archived channels even if the “Allow users to view archived channels” option is disabled.

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/github.com/mattermost/mattermost/server/v8
Introduced in: 9.0.0Fixed in: 9.4.2
Fixgo get github.com/mattermost/mattermost/server/v8@v9.4.2
Go/github.com/mattermost/mattermost/server/v8
Introduced in: 0Fixed in: 8.1.9
Fixgo get github.com/mattermost/mattermost/server/v8@v8.1.9

References