CVE-2024-56734
CVE-2024-56734 · Better Auth has an Open Redirect Vulnerability in Verify Email Endpoint
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Better Auth is an authentication library for TypeScript. An open redirect vulnerability has been identified in the verify email endpoint of all versions of Better Auth prior to v1.1.6, potentially allowing attackers to redirect users to malicious websites. This issue affects users relying on email verification links generated by the library. The verify email callback endpoint accepts a `callbackURL` parameter. Unlike other verification methods, email verification only uses JWT to verify and redirect without proper validation of the target domain. The origin checker is bypassed in this scenario because it only checks for `POST` requests. An attacker can manipulate this parameter to redirect users to arbitrary URLs controlled by the attacker. Version 1.1.6 contains a patch for the issue.
CVSS 7.9 · High · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
better-auth
- Versions
- < 1.1.5: Affected
No fix published
better-auth npm
- Affected ranges
- SEMVER: < 1.1.6
Update to 1.1.6