MEDIUM5.4
GO-2025-4050
Mattermost Server is vulnerable to XSS through customizable theme color-code values in github.com/mattermost/mattermost-server
Quick fix
GO-2025-4050 — github.com/mattermost/mattermost-server: upgrade to the fixed version with the command below.
go get github.com/mattermost/mattermost-server@v3.1.0+incompatibleDetails
Mattermost Server is vulnerable to XSS through customizable theme color-code values 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:
0Fixed in: 3.1.0+incompatibleFix
go get github.com/mattermost/mattermost-server@v3.1.0+incompatible