An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. An attacker could authenticate to a different users account via a crafted SAML response.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mattermost_server | Mattermost | * | 4.5.2 (excluding) |
| Mattermost_server | Mattermost | 4.6.0 (including) | 4.6.2 (excluding) |
| Mattermost_server | Mattermost | 4.7.0-rc1 (including) | 4.7.0-rc1 (including) |
| Mattermost_server | Mattermost | 4.7.0-rc2 (including) | 4.7.0-rc2 (including) |
| Mattermost_server | Mattermost | 4.7.0-rc3 (including) | 4.7.0-rc3 (including) |
| Mattermost_server | Mattermost | 4.7.0-rc4 (including) | 4.7.0-rc4 (including) |