Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/tinyauthapp/tinyauth/commit/c22925c2fba981875d0a2b09dd3ee41c0
- https://github.com/tinyauthapp/tinyauth/pull/1004
- https://github.com/tinyauthapp/tinyauth/releases/tag/v5.1.0
- https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-456h-ww26-f758
- https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-456h-ww26-f758
FAQ
What is CVE-2026-77582?
CVE-2026-77582 is a documented vulnerability. 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 user...
How severe is CVE-2026-77582?
CVSS scoring is not yet available for CVE-2026-77582. Check NVD for updates.
Is there a patch for CVE-2026-77582?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.