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CVE-2026-53516

CVE-2026-53516 · Better Auth: Account takeover via OAuth auto-link to unverified pre-registered email

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Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, Better Auth's OAuth callback auto-link gate in handleOAuthUserInfo accepts implicit account linking when the OAuth provider asserts email_verified: true without requiring the local user row's emailVerified field to also be true, allowing an attacker who pre-registers a victim email through /sign-up/email to bind the victim's OAuth identity to the attacker's account. The same primitive affects one-tap, and emailAndPassword.requireEmailVerification: true does not mitigate the link-time verification change. This issue is fixed in version 1.6.11.

CVSS 8.3 · Élevée · EPSS 0,3% · Correctif disponible

Publication
Mise à jour

Pile logicielle: node

Produits et versions concernés

  • better-auth

    Versions du logiciel
    • < 1.6.11: Concernée

    Aucun correctif publié

  • better-auth npm

    Plages de versions concernées
    • SEMVER: < 1.6.11

    Mettez à jour vers 1.6.11

Sources originales

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