CVE-2026-67334

CVE-2026-67334 affects better-auth versions before 1.6.11. When secondaryStorage is configured and storeSessionInDatabase is false, deleting users via admin, anonymous, or SCIM endpoints fails to delete cached sessions, allowing attackers to reuse deleted user session tokens for up to seven days ...

CVE-2026-67337 better-auth before 1.4.9 Two-Factor Authentication Bypass via session.cookieCache

better-auth versions before 1.4.9 contain a two-factor authentication bypass vulnerability when session.cookieCache is enabled. Attackers with valid primary credentials can access authenticated routes without completing second-factor verification by exploiting premature session caching...

CVE-2026-67335

Affected software: better-auth before 1.6.2. Vulnerability: OAuth state validation failure due to cookie-backed state storage without PKCE, allowing attackers to forge the state and supply an attacker-controlled authorization code. Impact: can create authenticated sessions bound to the attacker's...

CVE-2026-67335 better-auth before 1.6.2 OAuth State Validation Bypass

better-auth versions before 1.6.2 fail to validate the OAuth state parameter against the stored nonce when using cookie-backed state storage without PKCE. Attackers can forge the state parameter and supply an attacker-controlled authorization code to create authenticated sessions bound to the...

CVE-2026-67327

better-auth versions = 1.1.3 and = 1.7.0-beta.0 and 1.7.0-beta.10 are vulnerable to account takeover via pre-account hijacking on magic-link and email-OTP sign-in when open email/password registration is enabled. An attacker registers an account with the victim's email address and an...

EUVD-2026-51841

better-auth versions = 1.1.3 and = 1.7.0-beta.0 and 1.7.0-beta.10 are vulnerable to account takeover via pre-account hijacking on magic-link and email-OTP sign-in when open email/password registration is enabled. An attacker registers an account with the victim's email address and an...

CVE-2026-67331

CVE-2026-67331 affects better-auth SCIM, versions 1.5.0 up to but not including 1.7.0-beta.4. The vulnerability arises because non-organization SCIM providers are not bound to their creator by default, enabling an authenticated user to manage other users’ providers. Attackers can regenerate SCIM ...

CVE-2025-71404

better-auth versions after v0.0.2 and before 1.1.16 contain a reflected cross-site scripting XSS vulnerability on the /api/auth/error page, where the value of the 'error' URL parameter is reflected as HTML without proper neutralization. An attacker who coerces a user into visiting a...

CVE-2025-71404 better-auth before 1.1.16 Reflected XSS via error parameter

better-auth versions after v0.0.2 and before 1.1.16 contain a reflected cross-site scripting XSS vulnerability on the /api/auth/error page, where the value of the 'error' URL parameter is reflected as HTML without proper neutralization. An attacker who coerces a user into visiting a...

CVE-2025-71402 better-auth before 1.4.0 Session Revocation via Forged Cookie

better-auth versions greater than 1.3.34 and before 1.4.0 contain a vulnerability in the multi-session plugin's /sign-out after-hook, which trusts raw multi-session cookies and forwards extracted values to internalAdapter.deleteSessions without verifying the cookie signature e.g., via...

CVE-2025-71402

The CVE affects better-auth versions >1.3.34 and

CVE-2026-67330

The CVE affects @better-auth/scim (the better-auth SCIM plugin). Versions 1.4.0-beta.27 through 1.6.21 and 1.7.0-beta.0 through 1.7.0-beta.9 contain an authorization bypass caused by SCIM token issuance using provider IDs that collide with existing SSO/SAML/OIDC/generic OAuth/social provider name...

CVE-2025-71402 better-auth before 1.4.0 Session Revocation via Forged Cookie

better-auth versions greater than 1.3.34 and before 1.4.0 contain a vulnerability in the multi-session plugin's /sign-out after-hook, which trusts raw multi-session cookies and forwards extracted values to internalAdapter.deleteSessions without verifying the cookie signature e.g., via...

@access-dlsu/leapify (>=0.260531.1, <=0.260608.1), @agent-native/core (>=0.26.5, <=0.157.8) +224 more potentially affected by CVE-2026-67327 via better-auth (>=1.1.3, <=1.6.21)

better-auth NPM version =1.1.3, =0.260531.1, =0.26.5, =0.2.9, =0.3.3, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =2026.324.0-canary.0, =0.0.2, =2026.501.0, =2026.501.0, =0.1.3, =0.3.1 and more Source cves: CVE-2026-67327 Source advisory: SNYK:JS-BETTERAUTH-18319507...

GHSA-QQ9H-G4JM-XGF3 Better Auth: Account takeover via pre-account hijacking on magic-link and email-OTP sign-in

Am I affected You are affected if all of the following hold: - You run a better-auth version below 1.6.22, or a 1.7.0-beta below 1.7.0-beta.10. - You enable the magic-link plugin or the email-OTP plugin. - You also enable email and password sign-up with open registration. - An account can exist a...

Insufficient Verification of Data Authenticity

Overview better-auth is a The most comprehensive authentication library for TypeScript. Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in the authentication process. An attacker can gain persistent unauthorized access to user accounts by...

@access-dlsu/leapify (>=0.260531.1, <=0.260608.1), @agent-native/core (>=0.26.5, <=0.157.8) +224 more potentially affected by CVE-2026-67327 via better-auth (>=1.1.3, <=1.6.21)

better-auth NPM version =1.1.3, =0.260531.1, =0.26.5, =0.2.9, =0.3.3, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =1.0.35, =2026.324.0-canary.0, =0.0.2, =2026.501.0, =2026.501.0, =0.1.3, =0.3.1 and more Source cves: CVE-2026-67327 Source advisory: OSV:GHSA-QQ9H-G4JM-XGF3...

@automate.ax/components-core (>=0.1.3, <=0.3.1), @grease.sh/components-core (0.1.2) +4 more potentially affected by CVE-2026-67329 via @better-auth/stripe (>=1.6.9, <=1.6.11)

@better-auth/stripe NPM version =1.6.9, =0.1.3, =0.1.3, =0.1.0, =0.2.7 - grease.sh 0.1.2 Source cves: CVE-2026-67329 Source advisory: OSV:GHSA-H3RM-78G3-J7CP...

Incorrect Authorization

Overview @better-auth/stripe is a Stripe plugin for Better Auth Affected versions of this package are vulnerable to Incorrect Authorization through the handling of organization subscription actions when the authorizeReference callback is used and both subscription.enabled and organization.enabled...

@automate.ax/components-core (>=0.1.3, <=0.3.1), @grease.sh/components-core (0.1.2) +4 more potentially affected by CVE-2026-67329 via @better-auth/stripe (>=1.6.9, <=1.6.11)

@better-auth/stripe NPM version =1.6.9, =0.1.3, =0.1.3, =0.1.0, =0.2.7 - grease.sh 0.1.2 Source cves: CVE-2026-67329 Source advisory: SNYK:JS-BETTERAUTHSTRIPE-18319505...