critical8.7
CVE-2024-39777
Mattermost allows unsolicited invites to expose access to local channels
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 disallow unsolicited invites to expose access to local channels, when shared channels are enabled, which allows a malicious remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost/server/v8 | >= 9.9.0, < 9.9.1 | 9.9.1 |
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 |