critical8.7
CVE-2024-39274
Mattermost failed to properly validate that the channel that comes from the sync message is a shared channel
Impact
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to properly validate that the channel that comes from the sync message is a shared channel, when shared channels are enabled, which allows a malicious remote to add users to arbitrary teams and channels
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost/server/v8 | >= 9.5.0, < 9.5.7 | 9.5.7 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost | from 9.5.0 before 9.5.7 from 9.7.0 before 9.7.6 from 9.8.0 before 9.8.2 Version 9.9.0 |