Auth.js: Configuration errors can cause existence-based auth checks to fail open (auth object populated with an error)

Date Jul 23, 2026
Type Vendor advisory
Signal Critical vendor advisory
Vendor / Product npm · next-auth
Critical vendor advisory

Summary

Auth.js: Configuration errors can cause existence-based auth checks to fail open (auth object populated with an error)

Why it matters

GitHub has published a reviewed security advisory for next-auth. Prioritize it with other application dependency updates.

Operator check

Check whether next-auth is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 9.1.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.