Vulnerability in @Auth Core

CVE-2026-73419

NextAuth.js provides authentication for Next.js. Prior to@auth/core 0.41.3 and next-auth 4.24.15 and 5.0.0-beta.32, Auth.js stores the OAuth/OIDC anti-CSRF checks state, nonce, and the PKCE verifier in global cookies that are not bound to…

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-73419?
CVE-2026-73419 is a medium-severity vulnerability in @Auth Core, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.8/10. Published 2026-08-12.
How severe is CVE-2026-73419?
Medium severity. CVSS v3 base score is 6.8 out of 10.