# Better-Auth SSO vulnerabilities Source: https://junglewise.ai/threats/technologies/sso Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/sso.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 5 vulnerabilities in Better-Auth SSO: 0 in the last 7 days and 2 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-110863, was published on 14 October 2026. 1 vulnerability in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 0 - Last 30 days: 1 - Last 90 days: 2 - All time: 5 (1 critical, 0 exploited in the wild) ## About Better-Auth SSO A single sign-on plugin for the better-auth framework that enables authentication across multiple applications. ## Latest Better-Auth SSO vulnerabilities - [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-2026-80192: 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-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-2026-53515: 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) ## Most severe Better-Auth SSO vulnerabilities - [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-2026-67328: 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-2026-80192: 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-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-2026-53515: 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) ## Vulnerabilities per week 1 vulnerability in the last four weeks, up from none in the four before. | 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 | 1 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Better-Auth technologies - [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 SSO vulnerabilities", https://junglewise.ai/threats/technologies/sso, 9 November 2026.