CVE-2026-77582
Description
Tinyauth is an authentication and authorization server. Prior to 5.1.0, Tinyauth exposes a remotely observable timing difference between authentication attempts for existing and nonexistent local usernames. internal/controller/user_controller.go loginHandler and internal/middleware/context_middleware.go basicAuth return quickly after internal/service/auth_service.go reports a missing user, while an existing user causes bcrypt password verification work. Repeated measurements can therefore disclose valid usernames and support targeted credential attacks. This issue is fixed in version 5.1.0.
How to fix
- github.com/tinyauthapp/tinyauth1.0.1-0.20260714134959-c22925c2fba9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/tinyauthapp/tinyauthGo | v < 1.0.1-0.20260714134959-c22925c2fba9 | 1.0.1-0.20260714134959-c22925c2fba9 |
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