CVE-2026-32245
MEDIUM WAF: Low
CVSS 6.5
Published: 2026-03-12
CWE-863
Tinyauth is an authentication and authorization server. Prior to 5.0.3, the OIDC token endpoint does not verify that the client exchanging an authorization code is the same client the code was issued to. A malicious OIDC client operator can exchange another client's authorization code using their own client credentials, obtaining tokens for users who never authorized their application. This violates RFC 6749 Section 4.1.3. This vulnerability is fixed in 5.0.3.
WAF Coverage Analysis
Incorrect Authorization
Low WAF Coverage
OWASP: A01:2021 Broken Access Control
Affected Software
| Vendor | Product | Version |
|---|---|---|
| tinyauth | tinyauth | up to 5.0.2 |
References
- github.com (Patch)
- github.com (Release Notes)
- github.com (Exploit, Third Party Advisory)