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Better Auth

2 CVEs product

Monthly

CVE-2026-41427 npm HIGH POC PATCH GHSA This Week

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.5, the clientPrivileges option documents a create action, but the OAuth client creation endpoints did not invoke the hook before persisting new clients. Deployments that configured clientPrivileges to restrict client registration were not actually restricted - any authenticated user could reach the create endpoints and register an OAuth client with attacker-chosen redirect URIs and metadata. This vulnerability is fixed in 1.6.5.

Authentication Bypass Better Auth Oauth Provider
NVD GitHub VulDB
CVSS 4.0
7.1
EPSS
0.0%
CVE-2025-27143 npm MEDIUM PATCH This Month

Better Auth is an authentication and authorization library for TypeScript. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Open Redirect vulnerability could allow attackers to redirect users to malicious websites via URL manipulation.

Open Redirect Better Auth
NVD GitHub
CVSS 4.0
6.9
EPSS
0.2%
EPSS 0% CVSS 7.1
HIGH POC PATCH This Week

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.5, the clientPrivileges option documents a create action, but the OAuth client creation endpoints did not invoke the hook before persisting new clients. Deployments that configured clientPrivileges to restrict client registration were not actually restricted - any authenticated user could reach the create endpoints and register an OAuth client with attacker-chosen redirect URIs and metadata. This vulnerability is fixed in 1.6.5.

Authentication Bypass Better Auth Oauth Provider
NVD GitHub VulDB
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

Better Auth is an authentication and authorization library for TypeScript. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Open Redirect vulnerability could allow attackers to redirect users to malicious websites via URL manipulation.

Open Redirect Better Auth
NVD GitHub

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