GHSA-vvpg-55p7-5h8w
Mattermost did not properly restrict channel creation
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.5.0, < 9.5.7 | 9.5.7 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.9.0, < 9.9.1 | 9.9.1 |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20240626164322-c758cecaf30c | 8.0.0-20240626164322-c758cecaf30c |
| Go | github.com/mattermost/mattermost-server | >= 9.9.0, < 9.9.1 | 9.9.1 |
| Go | github.com/mattermost/mattermost-server/v5 | < 5.3.2-0.20240626164322-c758cecaf30c | 5.3.2-0.20240626164322-c758cecaf30c |
| Go | github.com/mattermost/mattermost-server/v6 | < 6.0.0-20240626164322-c758cecaf30c | 6.0.0-20240626164322-c758cecaf30c |
| Go | github.com/mattermost/mattermost-server | >= 9.5.0, < 9.5.7 | 9.5.7 |
Details
As written in the advisory (Markdown source, shown as plain text).
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly restrict channel creation which allows a malicious remote to create arbitrary channels, when shared channels were enabled.
References
External links from the advisory. They lead to third-party sites.