CVE-2026-33544

HIGH

7.7

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.17.7

SeveridadeHIGH

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

Vetor de ataqueNETWORK

ComplexidadeHIGH

Privilegios necessariosLOW

Interacao do usuarioREQUIRED

Publicado4/2/2026

Ultima modificacao4/3/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (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)

Correlacoes IOC

Sem correlacoes registradas

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