CVE-2026-33544

HIGH

7.7

Descripcion

Tinyauth is an authentication and authorization server. Prior to version 5.0.5, all three OAuth service implementations (GenericOAuthService, GithubOAuthService, GoogleOAuthService) store PKCE verifiers and access tokens as mutable struct fields on singleton instances shared across all concurrent requests. When two users initiate OAuth login for the same provider concurrently, a race condition between VerifyCode() and Userinfo() causes one user to receive a session with the other user's identity. This issue has been patched in version 5.0.5.

Detalles CVE

Puntuacion CVSS v3.17.7

SeveridadHIGH

Vector CVSSCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

Vector de ataqueNETWORK

ComplejidadHIGH

Privilegios requeridosLOW

Interaccion usuarioREQUIRED

Publicado4/2/2026

Ultima modificacion4/3/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-362

Referencias

https://github.com/steveiliop56/tinyauth/commit/f26c2171610d5c2dfbba2edb6ccd39490e349803(security-advisories@github.com)

https://github.com/steveiliop56/tinyauth/releases/tag/v5.0.5(security-advisories@github.com)

https://github.com/steveiliop56/tinyauth/security/advisories/GHSA-9q5m-jfc4-wc92(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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