CVE-2026-73421 | nextauthjs next-auth up to 5.0.0-beta.31 Session Parsing improper authorization

A vulnerability marked as critical has been reported in nextauthjs next-auth up to 5.0.0-beta.31. Affected by this vulnerability is the function auth of the component Session Parsing. The manipulation leads to improper authorization.

This vulnerability is traded as CVE-2026-73421. It is possible to initiate the attack remotely. There is no exploit available.

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