CVE-2026-67334 better-auth Stale Sessions Persist After User Deletion

better-auth versions before 1.6.11 fail to delete cached sessions when removing users via admin, anonymous, or SCIM endpoints when secondaryStorage is configured and storeSessionInDatabase is false. Attackers can reuse deleted user session tokens to maintain authentication 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-2025-71403 better-auth before 1.1.20 Open Redirect via trustedOrigins Bypass

better-auth versions before 1.1.20 contain a bypass vulnerability in trustedOrigins validation logic affecting absolute URLs and wildcard domains. Attackers can construct malicious callbackURL parameters that pass origin checks and trigger open redirects to steal sensitive tokens for account...

CVE-2026-67334

better-auth versions before 1.6.11 fail to delete cached sessions when removing users via admin, anonymous, or SCIM endpoints when secondaryStorage is configured and storeSessionInDatabase is false. Attackers can reuse deleted user session tokens to maintain authentication for up to seven days...

CVE-2026-67336

better-auth versions before 1.6.11 contain insecure cryptographic defaults in the oidcProvider and mcp plugins that advertise the none algorithm and accept plain PKCE by default. Attackers can exploit algorithm negotiation to accept unsigned tokens or intercept authorization codes when PKCE plain...

CVE-2025-71403

The CVE-2025-71403 entry concerns better-auth versions prior to 1.1.20, where a bypass in trustedOrigins validation logic affects absolute URLs and wildcard domains. This enables an attacker to craft malicious callbackURL parameters that bypass origin checks and trigger open redirects, potentiall...

@alstar/studio (0.0.0-beta.20), @better-auth/cli (>=0.0.1, <=1.4.6-beta.2) +74 more potentially affected by CVE-2026-67337 via better-auth (>=0.4.9-beta.7, <=1.4.8-beta.4)

better-auth NPM version =0.4.9-beta.7, =0.0.1, =1.3.27, =1.3.27, =1.3.27, =1.3.27, =1.3.27, =1.3.27, =1.3.26, =1.3.27, =0.18.0, =0.5.2, =1.0.2, =1.0.2, =1.0.2, =2.0.3 and more Source cves: CVE-2026-67337 Source advisory: MEND:CVE-2026-67337...

CVE-2026-67337

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-2026-67333 better-auth before 1.6.13 Stored XSS via javascript redirect_uri

better-auth before 1.6.13 and pre-release builds 1.7.0-beta.0 through 1.7.0-beta.3 fail to validate the scheme of redirecturis registered via the deprecated oidc-provider plugin and the mcp plugin which wraps the same provider. An attacker can register an OAuth client with a javascript:...

CVE-2026-67329 @better-auth/stripe before 1.6.21 Authorization Bypass via Organization Subscription

@better-auth/stripe versions = 1.4.11 and = 1.7.0-beta.0 and 1.7.0-beta.10, contain an authorization bypass in organization subscription actions. The middleware validates the organization ID taken from the request query string against the authorizeReference callback, but the handler reads the...

CVE-2026-67333

CVE-2026-67333 concerns the app/tooling package better-auth (versions before 1.6.13 and pre-release 1.7.0-beta.0–beta.3) and incorrect validation of the scheme for redirect_uris registered via the deprecated oidc-provider and the wrapped mcp plugin. An attacker can register an OAuth client with a...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +203 more potentially affected by CVE-2026-67334 via better-auth (>=0.4.9-beta.7, <=1.6.10)

better-auth NPM version =0.4.9-beta.7, =0.26.5, =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, =0.0.7, =0.0.1, =1.5.0-beta.13 and more Source cves: CVE-2026-67334 Source advisory: MEND:CVE-2026-67334...

auth (>=1.7.0-beta.0, <=1.7.0-beta.3) potentially affected by CVE-2026-67333 via better-auth (>=1.7.0-beta.0, <=1.7.0-beta.3)

better-auth NPM version =1.7.0-beta.0, =1.7.0-beta.0, =1.7.0-beta.3 Source cves: CVE-2026-67333 Source advisory: MEND:CVE-2026-67333...

@agent-native/core (>=0.26.5, <=0.47.1), @agentcorporation/server (>=0.3.3, <=0.3.13) +203 more potentially affected by CVE-2026-67336 via better-auth (>=0.4.9-beta.7, <=1.6.10)

better-auth NPM version =0.4.9-beta.7, =0.26.5, =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, =0.0.7, =0.0.1, =1.5.0-beta.13 and more Source cves: CVE-2026-67336 Source advisory: MEND:CVE-2026-67336...

CVE-2025-71403

better-auth versions before 1.1.20 contain a bypass vulnerability in trustedOrigins validation logic affecting absolute URLs and wildcard domains. Attackers can construct malicious callbackURL parameters that pass origin checks and trigger open redirects to steal sensitive tokens for account...

@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: MEND:CVE-2026-67329...

CVE-2026-67333 better-auth before 1.6.13 Stored XSS via javascript redirect_uri

better-auth before 1.6.13 and pre-release builds 1.7.0-beta.0 through 1.7.0-beta.3 fail to validate the scheme of redirecturis registered via the deprecated oidc-provider plugin and the mcp plugin which wraps the same provider. An attacker can register an OAuth client with a javascript:...

CVE-2026-67332

@better-auth/oauth-provider before 1.7.0-beta.4 fails to bind access-token audience to the authorization grant, allowing clients to request tokens for unrelated resources. Attackers can complete an OAuth flow and obtain access tokens whose audience targets resource servers the authorization never...

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-2026-67334

better-auth versions before 1.6.11 fail to delete cached sessions when removing users via admin, anonymous, or SCIM endpoints when secondaryStorage is configured and storeSessionInDatabase is false. Attackers can reuse deleted user session tokens to maintain authentication for up to seven days...