CRITICAL 9.3 NVD
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 r
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.
References
- https://github.com/better-auth/better-auth/security/advisories/GHSA-965c-763c-88jm
- https://www.vulncheck.com/advisories/better-auth-1.4.0-beta.18-before-1.7.7-authentication
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-10-14 via NVD.
Risk Timeline
CVE Disclosed2026-10-14 · 0 days ago
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