CVE-2026-32246 — Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint
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…
Published: 2026-03-12 · CVSS: 8.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7