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.

Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-3q28-qjrv-qr39 Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 12 Mar 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 12 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-12T20:46:24.238Z

Reserved: 2026-03-11T14:47:05.685Z

Link: CVE-2026-32246

cve-icon Vulnrichment

Updated: 2026-03-12T20:43:39.320Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-12T19:16:19.577

Modified: 2026-03-12T21:07:53.427

Link: CVE-2026-32246

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses