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npm/next-auth CVE-2026-73420: critical, EPSS 0.73%

Auth.js: Email normalizer validates the address before Unicode normalization, allowing a homoglyph @ bypass

Action: Upgrade next-auth to 4.24.15 or later.

npm i next-auth@4.24.15
npm i next-auth@5.0.0-beta.32

Affected

introducedfixedlast affected
4.10.34.24.15-
5.0.0-beta.15.0.0-beta.32-

Fixed versions

4.24.155.0.0-beta.32

Sources

CVE-2026-73420 · published · modified · JSON