CVE-2026-110862 — Better Auth 1.4.0-beta.18 before 1.7.7 Authentication Bypass via Magic Link
Better Auth from 1.4.0-beta.18 before 1.7.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to sign in as other users by reusing OAuth stat…
Published: 2026-10-14 · CVSS: 9.3 · CVSS 4.0
Better Auth from 1.4.0-beta.18 before 1.7.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to sign in as other users by reusing OAuth state values as Magic Link tokens. Attackers can start an OAuth sign-in with a victim's email and submit the returned state to Magic Link verification, gaining sessions or creating falsely email-verified accounts.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7