CVE-2026-32246 | BDVDB-2026-320247 Detail

steveiliop56tinyauth

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-287 Improper Authentication

References#

https://github.com/steveiliop56/tinyauth/security/advisories/GHSA-3q28-qjrv-qr39

Exploit#

No public exploit known

History#

Version 12026-03-12Record published in the CVE List.

Published

Published: 2026-03-12
Last modified: 2026-03-12

Vendor information

Vendor: steveiliop56
Product: tinyauth

All steveiliop56 vulnerabilities

Score

8.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 23.7.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 5.0.3
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.5 High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Changed
Confidentiality	Low
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).