CVE-2026-75509 | authlib joserfc up to 1.7.2 JWTClaimsRegistry improper authentication

August 24, 2026 Yanac

A vulnerability classified as critical has been found in authlib joserfc up to 1.7.2. Affected by this issue is some unknown functionality of the component JWTClaimsRegistry. This manipulation causes improper authentication.

This vulnerability appears as CVE-2026-75509. The attack may be initiated remotely. There is no available exploit.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More