CVE-2026-32246 — Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint

CVE-2026-32246

Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint PUBLISHED

Description (CNA)

Tinyauth is an authentication and authorization server. Prior to 5.0.3, the OIDC authorization endpoint allows users with a TOTP-pending session (password verified, TOTP not yet completed) to obtain authorization codes. An attacker who knows a user's password but not their TOTP secret can obtain valid OIDC tokens, completely bypassing the second factor. This vulnerability is fixed in 5.0.3.

Affected (CNA)

Vendor / product	Versions
steveiliop56 / tinyauth	affected < 5.0.3

CWE

CWE-287

References

https://github.com/steveiliop56/tinyauth/security/advisories/GHSA-3q28-qjrv-qr39

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.