CVE-2026-32246
Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint
CVSS Score
8.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 |
| Vendor | steveiliop56 |
| Product | tinyauth |
| Published | Mar 12, 2026 |
| Last Updated | Mar 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
High
Availability
None
Affected Versions
steveiliop56 / tinyauth
< 5.0.3