GO-2025-4190
NoneCVSS
—
EPSS
—
Published
Dec 8, 2025
CISA due date
—
The record
Mattermost Server is vulnerable to XSS attacks against an OAuth 2.0 allow/deny page in github.com/mattermost/mattermost-server
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 0 | 4.1.2+incompatible |
| Go | github.com/mattermost/mattermost-server | 0 | 4.1.2 |
| Go | github.com/mattermost/mattermost-server | 4.2.0 | 4.2.1 |
| Go | github.com/mattermost/mattermost-server | 4.3.0-rc1 | 4.3.0 |
| go | github.com/mattermost/mattermost-server | 4.2.0 | 4.2.1 |
| go | github.com/mattermost/mattermost-server | 4.3.0-rc1 | 4.3.0 |
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