Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Better-Auth | Better Auth | < 1.1.6 |
Related Weaknesses (CWE)
References
- https://github.com/better-auth/better-auth/commit/deb3d73aea90d0468d92723f451154Patch
- https://github.com/better-auth/better-auth/security/advisories/GHSA-8jhw-6pjj-87ExploitMitigationVendor Advisory
FAQ
What is CVE-2024-56734?
CVE-2024-56734 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 all...
How severe is CVE-2024-56734?
CVE-2024-56734 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-56734?
Check the references section above for vendor advisories and patch information. Affected products include: Better-Auth Better Auth.