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cve recordmedium

CVE-2026-32245

tinyauth · tinyauth

Published
CVSS6.5
Severitymedium
WeaknessCWE-863
ExploitedNot in CISA KEV

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

Description

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.

References

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