high8.1
CVE-2017-18894
Mattermost Server has intermittent Authorization bypass for resource-owners
Impact
An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider. Resource-owner authorization can be intermittently bypassed, allowing account takeover.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-server | < 4.0.5 | 4.0.5 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Server | before 4.0.5 from 4.1.0 before 4.1.1 Version 4.2.0 |