CVE-2025-53535: Better Auth Open Redirect Vulnerability in originCheck Middleware Affects Multiple Routes

July 7, 2025

An open redirect has been found in the originCheck middleware function, which affects the following routes: /verify-email, /reset-password/:token, /delete-user/callback, /magic-link/verify, /oauth-proxy-callback.

References

github.com/advisories/GHSA-36rg-gfq2-3h56
github.com/better-auth/better-auth
github.com/better-auth/better-auth/commit/9801d1be53d9da04686b94c6286c53ec97496740
github.com/better-auth/better-auth/security/advisories/GHSA-36rg-gfq2-3h56
nvd.nist.gov/vuln/detail/CVE-2025-53535

Code Behaviors & Features

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