What’s Vulnerable › Vulnerabilities
CVE-2026-32246: Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint
- Severity: high (CVSS 7.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-03-12 · updated 2026-06-17
- Weakness: CWE-287
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.
Affected products
- steveiliop56 tinyauth: through 5.0.2
References
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