CVE-2026-77582
Tinyauth: User enumeration attack by timing oracle
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-208 |
| Vendor | tinyauthapp |
| Product | tinyauth |
| Published | Sep 21, 2026 |
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Affected Versions
tinyauthapp / tinyauth
< 5.1.0
References
github.com: https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-456h-ww26-f758 github.com: https://github.com/tinyauthapp/tinyauth/pull/1004 github.com: https://github.com/tinyauthapp/tinyauth/commit/c22925c2fba981875d0a2b09dd3ee41c0ae4c310 github.com: https://github.com/tinyauthapp/tinyauth/releases/tag/v5.1.0