Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to use constant-time comparison for sensitive string comparisons which allows attackers to exploit timing oracles to perform byte-by-byte brute force attacks via response time analysis on Cloud API keys and OAuth client secrets
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/mattermost/mattermost/server/v8(Go) | 0 | 8.0.0-20250728063359-38208b8f065f | N/A |
| github.com/mattermost/mattermost-server(Go) | 10.5.0 | 10.5.11 | N/A |
| github.com/mattermost/mattermost-server(Go) | 10.11.0 | 10.11.3 | N/A |
CVSS Metrics
