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MEDIUM4.3

GHSA-jjr7-372r-cx7x

Mattermost Exposure of Sensitive Information to an Unauthorized Actor vulnerability

Quick fix

GHSA-jjr7-372r-cx7x — github.com/mattermost/mattermost/server/v8: upgrade to the fixed version with the command below.

go get github.com/mattermost/mattermost/server/v8@v9.1.1

Details

Mattermost fails to check whether the "Allow users to view archived channels" setting is enabled during permalink previews display, allowing members to view permalink previews of archived channels even if the "Allow users to view archived channels" setting 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: 9.1.0Fixed in: 9.1.1
Fixgo get github.com/mattermost/mattermost/server/v8@v9.1.1
Go/github.com/mattermost/mattermost/server/v8
Introduced in: 9.0.0Fixed in: 9.0.2
Fixgo get github.com/mattermost/mattermost/server/v8@v9.0.2
Go/github.com/mattermost/mattermost/server/v8
Introduced in: 0Fixed in: 8.1.4
Fixgo get github.com/mattermost/mattermost/server/v8@v8.1.4
Go/github.com/mattermost/mattermost-server/v6
Introduced in: 0Fixed in: 7.8.13
Fixgo get github.com/mattermost/mattermost-server/v6@v7.8.13

References