critical9.1
CVE-2026-110862
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 …
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| Better Auth From 1.4.0-Beta.18 | before 1.7.7 |
Versions were read from the advisory text. No structured product data has been published for this record yet.