medium2.7
CVE-2024-41926
Mattermost allows remote actor to set arbitrary RemoteId values for synced users
Impact
Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote.
Affected 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 | < 5.3.2-0.20240604093018-5114c3b7cdb8 | 5.3.2-0.20240604093018-5114c3b7cdb8 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Server | from 9.5.0 before 9.5.7 Version 9.9.0 |