CVE-2026-33544

HIGH

7.7

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung7.7

SchweregradHIGH

CVSS VektorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

AngriffsvektorNETWORK

KomplexitatHIGH

Erforderliche PrivilegienLOW

BenutzerinteraktionREQUIRED

Veroffentlicht4/2/2026

Zuletzt geandert4/3/2026

Quellenvd

Honeypot-Sichtungen0

Schwachen (CWE)

CWE-362

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

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