{"id":"CVE-2026-77582","published":"2026-09-21T17:18:53.110","lastModified":"2026-09-21T17:18:53.110","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-208"],"vendors":[],"products":[],"references":[{"url":"https://github.com/tinyauthapp/tinyauth/commit/c22925c2fba981875d0a2b09dd3ee41c0ae4c310","tags":[]},{"url":"https://github.com/tinyauthapp/tinyauth/pull/1004","tags":[]},{"url":"https://github.com/tinyauthapp/tinyauth/releases/tag/v5.1.0","tags":[]},{"url":"https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-456h-ww26-f758","tags":[]}],"exploitRefs":[{"url":"https://github.com/tinyauthapp/tinyauth/commit/c22925c2fba981875d0a2b09dd3ee41c0ae4c310","tags":[]},{"url":"https://github.com/tinyauthapp/tinyauth/pull/1004","tags":[]},{"url":"https://github.com/tinyauthapp/tinyauth/releases/tag/v5.1.0","tags":[]},{"url":"https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-456h-ww26-f758","tags":[]}],"hasPoc":true,"ai":null}