EUVD-2026-84014Published

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_controll…

Historical advisory saved 30 Oct 2026 11:58:03 UTC. The publisher may have updated it since then. Latest advisory.

euvd · EUVD-2026-84014

Published

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.

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datePublished: Sep 21, 2026, 4:43:43 PM

dateUpdated: Sep 23, 2026, 7:16:39 PM

Source published: Sep 21, 2026, 4:43:43 PM (timezone not stated)
Source modified: Sep 23, 2026, 7:16:39 PM (timezone not stated)
Saved here: 30 Oct 2026 11:58:03 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 4.0 · 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N