Stavros

2 exploits Active since Mar 2026
CVE-2026-33544 WRITEUP HIGH WRITEUP
Tinyauth has OAuth account confusion via shared mutable state on singleton service instances
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.
CVSS 7.7
CVE-2026-32245 WRITEUP MEDIUM WRITEUP
tinyauth < 5.0.3 - Incorrect Authorization via OIDC Token Endpoint
Tinyauth is an authentication and authorization server. Prior to 5.0.3, the OIDC token endpoint does not verify that the client exchanging an authorization code is the same client the code was issued to. A malicious OIDC client operator can exchange another client's authorization code using their own client credentials, obtaining tokens for users who never authorized their application. This violates RFC 6749 Section 4.1.3. This vulnerability is fixed in 5.0.3.
CVSS 6.5