# Better-Auth vulnerabilities Source: https://junglewise.ai/threats/vendors/better-auth Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/vendors/better-auth.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 21 vulnerabilities in Better-Auth: 0 in the last 7 days and 7 in the last 90 days, 6 of them critical and 0 exploited in the wild. The most recent, CVE-2026-121802, was published on 4 November 2026. 6 vulnerabilities in the last four weeks, up from none in the four before. 3 critical against 0. 4 technologies have a page of their own. ## Counts - Last 7 days: 0 - Last 30 days: 5 - Last 90 days: 7 - All time: 21 (6 critical, 0 exploited in the wild) ## About Better-Auth An open-source authentication framework for TypeScript and JavaScript applications. ## Latest Better-Auth vulnerabilities - [CVE-2026-121802: better-auth/expo signature validation bypass allowing account takeover](https://junglewise.ai/threats/cve-2026-121802-better-auth-expo-before-1-7-16-allows-certain-account-takeover) (critical, CVSS 9.1, published 4 Nov 2026) - [CVE-2026-114607: Better Auth authentication bypass in Magic Link and OAuth](https://junglewise.ai/threats/cve-2026-114607-better-auth-is-an-authentication-and-authorization-library-for) (critical, CVSS 9.1, published 22 Oct 2026) - [CVE-2026-110864: Better Auth OAuth Proxy authentication bypass](https://junglewise.ai/threats/cve-2026-110864-better-auth-from-1-5-0-beta-12-before-1-7-7-contains-an) (high, CVSS 7.4, published 14 Oct 2026) - [CVE-2026-110863: Better Auth SSO authentication bypass via personal provider identity spoofing](https://junglewise.ai/threats/cve-2026-110863-better-auth-better-auth-sso-from-1-7-0-rc-2-before-1-7-3) (high, CVSS 8.1, published 14 Oct 2026) - [CVE-2026-110862: Better Auth authentication bypass via OAuth state reuse](https://junglewise.ai/threats/cve-2026-110862-better-auth-from-1-4-0-beta-18-before-1-7-7-contains-an) (critical, CVSS 9.1, published 14 Oct 2026) - [CVE-2026-109346: better-auth device authorization UI misrepresentation in deviceAuthorization plugin](https://junglewise.ai/threats/cve-2026-109346-better-auth-from-1-3-8-beta-3-before-1-7-0-rc-3-contains-a-ui) (high, CVSS 8.1, published 12 Oct 2026) - [CVE-2026-80192: better-auth SSO domain ownership flaw in authentication](https://junglewise.ai/threats/cve-2026-80192-better-auth-sso-domain-ownership-flaw-in-authentication) (high, CVSS 8.1, published 26 Aug 2026) - [CVE-2025-71400: Better Auth passkey plugin insecure direct object reference (IDOR) in passkey deletion](https://junglewise.ai/threats/cve-2025-71400-better-auth-passkey-plugin-insecure-direct-object-reference-idor) (high, CVSS 7.1, published 2 Aug 2026) - [CVE-2026-67334: Better Auth stale sessions after user deletion in secondary storage](https://junglewise.ai/threats/cve-2026-67334-better-auth-stale-sessions-after-user-deletion-in-secondary) (low, CVSS 3.8, published 1 Aug 2026) - [CVE-2026-67332: better-auth oauth-provider access token audience not bound to authorization grant](https://junglewise.ai/threats/cve-2026-67332-better-auth-oauth-provider-access-token-audience-not-bound-to) (medium, CVSS 6.4, published 1 Aug 2026) - [CVE-2026-67331: Better Auth SCIM provider takeover via missing owner binding](https://junglewise.ai/threats/cve-2026-67331-better-auth-scim-provider-takeover-via-missing-owner-binding) (high, CVSS 8.3, published 1 Aug 2026) - [CVE-2026-67330: better-auth SCIM authorization bypass via provider ID collision](https://junglewise.ai/threats/cve-2026-67330-better-auth-scim-authorization-bypass-via-provider-id-collision) (critical, CVSS 9.9, published 1 Aug 2026) - [CVE-2026-67329: better-auth Stripe authorization bypass in organization subscription actions](https://junglewise.ai/threats/cve-2026-67329-better-auth-stripe-authorization-bypass-in-organization) (high, CVSS 7.1, published 1 Aug 2026) - [CVE-2026-67328: better-auth SSO multiple authentication bypass vulnerabilities](https://junglewise.ai/threats/cve-2026-67328-better-auth-sso-multiple-authentication-bypass-vulnerabilities) (high, CVSS 8.1, published 1 Aug 2026) - [Better Auth @better-auth/scim account takeover via provider-id collision](https://junglewise.ai/threats/better-auth-better-auth-scim-account-takeover-via-provider-id-collision-13a59dcc) (critical, CVSS 9.9, published 24 Jul 2026) - [CVE-2026-53518: Better Auth race condition in OAuth authorization code redemption](https://junglewise.ai/threats/cve-2026-53518-better-auth-race-condition-in-oauth-authorization-code-redemption) (high, CVSS 8.1, published 15 Jul 2026) - [CVE-2026-53517: Better Auth race condition in OAuth refresh token rotation](https://junglewise.ai/threats/cve-2026-53517-better-auth-race-condition-in-oauth-refresh-token-rotation) (high, CVSS 8.1, published 15 Jul 2026) - [CVE-2026-53515: Better Auth improper authorization in SSO provider registration](https://junglewise.ai/threats/cve-2026-53515-better-auth-improper-authorization-in-sso-provider-registration) (high, CVSS 7.1, published 15 Jul 2026) - [CVE-2026-53513: Better Auth SSRF and account takeover in @better-auth/sso plugin](https://junglewise.ai/threats/cve-2026-53513-better-auth-ssrf-and-account-takeover-in-better-auth-sso-plugin) (critical, CVSS 9.6, published 15 Jul 2026) - [CVE-2026-15527: better-auth better-icons path traversal and code injection in sync_icon](https://junglewise.ai/threats/cve-2026-15527-better-auth-better-icons-path-traversal-and-code-injection-in) (medium, CVSS 5.3, published 13 Jul 2026) - [CVE-2026-41427: Better Auth OAuth Provider authorization bypass in client creation](https://junglewise.ai/threats/cve-2026-41427-oauth-2-1-provider-unprivileged-users-can-register-oauth-clients) (high, CVSS 6.5, published 24 Apr 2026) ## Most severe Better-Auth vulnerabilities - [CVE-2026-67330: better-auth SCIM authorization bypass via provider ID collision](https://junglewise.ai/threats/cve-2026-67330-better-auth-scim-authorization-bypass-via-provider-id-collision) (critical, CVSS 9.9, published 1 Aug 2026) - [Better Auth @better-auth/scim account takeover via provider-id collision](https://junglewise.ai/threats/better-auth-better-auth-scim-account-takeover-via-provider-id-collision-13a59dcc) (critical, CVSS 9.9, published 24 Jul 2026) - [CVE-2026-53513: Better Auth SSRF and account takeover in @better-auth/sso plugin](https://junglewise.ai/threats/cve-2026-53513-better-auth-ssrf-and-account-takeover-in-better-auth-sso-plugin) (critical, CVSS 9.6, published 15 Jul 2026) - [CVE-2026-114607: Better Auth authentication bypass in Magic Link and OAuth](https://junglewise.ai/threats/cve-2026-114607-better-auth-is-an-authentication-and-authorization-library-for) (critical, CVSS 9.1, published 22 Oct 2026) - [CVE-2026-110862: Better Auth authentication bypass via OAuth state reuse](https://junglewise.ai/threats/cve-2026-110862-better-auth-from-1-4-0-beta-18-before-1-7-7-contains-an) (critical, CVSS 9.1, published 14 Oct 2026) - [CVE-2026-121802: better-auth/expo signature validation bypass allowing account takeover](https://junglewise.ai/threats/cve-2026-121802-better-auth-expo-before-1-7-16-allows-certain-account-takeover) (critical, CVSS 9.1, published 4 Nov 2026) - [CVE-2026-67331: Better Auth SCIM provider takeover via missing owner binding](https://junglewise.ai/threats/cve-2026-67331-better-auth-scim-provider-takeover-via-missing-owner-binding) (high, CVSS 8.3, published 1 Aug 2026) - [CVE-2026-67328: better-auth SSO multiple authentication bypass vulnerabilities](https://junglewise.ai/threats/cve-2026-67328-better-auth-sso-multiple-authentication-bypass-vulnerabilities) (high, CVSS 8.1, published 1 Aug 2026) - [CVE-2026-53517: Better Auth race condition in OAuth refresh token rotation](https://junglewise.ai/threats/cve-2026-53517-better-auth-race-condition-in-oauth-refresh-token-rotation) (high, CVSS 8.1, published 15 Jul 2026) - [CVE-2026-53518: Better Auth race condition in OAuth authorization code redemption](https://junglewise.ai/threats/cve-2026-53518-better-auth-race-condition-in-oauth-authorization-code-redemption) (high, CVSS 8.1, published 15 Jul 2026) ## Vulnerabilities per week 6 vulnerabilities in the last four weeks, up from none in the four before. 3 critical against 0. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 1 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 4 | 1 | 0 | | 19 Oct 2026 | 1 | 1 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 1 | 1 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Better-Auth technologies - [Better-Auth SSO](https://junglewise.ai/threats/technologies/sso): 5 vulnerabilities - [Better-Auth](https://junglewise.ai/threats/technologies/better-auth-better-auth): 4 vulnerabilities - [Better-Auth Oauth-Provider](https://junglewise.ai/threats/technologies/oauth-provider): 4 vulnerabilities - [Better-Auth SCIM Plugin](https://junglewise.ai/threats/technologies/scim-plugin): 3 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Better-Auth vulnerabilities", https://junglewise.ai/threats/vendors/better-auth, 12 November 2026.