CVE-2026-110862Critical· 9.1▾ MidnightBetter 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 …
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 50.1 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-114607Critical· 9.1better-auth: OAuth state can be used as a Magic Link to sign in as another user
CVE-2026-110864High· 7.4Better Auth from 1.5.0-beta.12 before 1.7.7 contains an authentication bypass vulnerability in the OAuth Proxy plugin that allows unauthenticated attackers to sign in as other users by forging encrypted profiles
GHSA-r4xp-prcw-77qfHigh· 7.4better-auth: OAuth Proxy lets an attacker sign in as another user
GHSA-qq9h-g4jm-xgf3High· 8.3Better Auth: Account takeover via pre-account hijacking on magic-link and email-OTP sign-in
CVE-2026-53514High· 7.7Better Auth vulnerable to unauthorized invitation acceptance via unverified email match in organization plugin
CVE-2026-53516High· 8.3Better Auth has an account takeover issue via OAuth auto-link to unverified pre-registered email