Vulnerability history

NPM: Better Auth: Stale sessions persist after user deletion across admin, anonymous, and SCIM flows

NPM: @better-auth/oauth-provider's OAuth authorization-code grant allows concurrent redemption when two token requests race the find-then-delete primitive

NPM: Better Auth: OAuth refresh-token rotation forks the token family on concurrent redemption

NPM: Better Auth has insecure cryptographic defaults in oidcProvider: alg=none advertised and plain PKCE accepted by default

NPM: Better Auth has stored XSS in the auth-server origin via javascript: redirect_uri in oidc-provider and mcp

NPM: Better Auth has an account takeover issue via OAuth auto-link to unverified pre-registered email

NPM: Better Auth vulnerable to unauthorized invitation acceptance via unverified email match in organization plugin

NPM: Better Auth: OAuth refresh-token replay via missing client authentication on oidc-provider and mcp plugins

NPM: Better Auth: Device authorization approve and deny accept any authenticated session while the user code is pending

NPM: Better Auth: Rate limiter keys IPv6 addresses individually and is bypassable via prefix rotation

NPM: Better Auth: OAuth callback accepts mismatched `state` when cookie-backed state storage is used without PKCE

NPM: Better Auth Has Two-Factor Authentication Bypass via Premature Session Caching (session.cookieCache)

NPM: Better Auth's rou3 Dependency has Double-Slash Path Normalization which can Bypass disabledPaths Config and Rate Limits

NPM: Better Auth affected by external request basePath modification DoS

NPM: Better Auth's multi-session sign-out hook allows forged cookies to revoke arbitrary sessions

NPM: Better Auth: Unauthenticated API key creation through api-key plugin

NPM: Better Auth Open Redirect Vulnerability in originCheck Middleware Affects Multiple Routes

NPM: Better Auth allows bypassing the trustedOrigins Protection which leads to ATO

NPM: Beter Auth has an Open Redirect via Scheme-Less Callback Parameter

NPM: Better Auth URL parameter HTML Injection (Reflected Cross-Site scripting)

NPM: Better Auth has an Open Redirect Vulnerability in Verify Email Endpoint