What is CVE-2026-32246?

CVE-2026-32246 is a high-severity vulnerability in Steveiliop56 Tinyauth, classified under Improper Authentication. CVSS score: 8.5/10. Published 2026-03-12.

How severe is CVE-2026-32246?

High severity. CVSS v3 base score is 8.5 out of 10.

Auth bypass in Steveiliop56 Tinyauth

CVE-2026-32246

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.

Vulnerability class: Broken Authentication

EPSS: 0.003 (19.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N.

Affected products

Steveiliop56 Tinyauth — versions < 5.0.3
Tinyauth

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-32246?: CVE-2026-32246 is a high-severity vulnerability in Steveiliop56 Tinyauth, classified under Improper Authentication. CVSS score: 8.5/10. Published 2026-03-12.
How severe is CVE-2026-32246?: High severity. CVSS v3 base score is 8.5 out of 10.