CVE-2026-67328 — @better-auth/sso before 1.6.21 Account Takeover via SSO
@better-auth/sso versions before 1.6.21 contain multiple authentication bypass vulnerabilities in SSO provider handling that allow attackers to sign in as arbitrary users. Attac…
Published: 2026-08-01 · CVSS: 8.6 · CVSS 4.0
@better-auth/sso versions before 1.6.21 contain multiple authentication bypass vulnerabilities in SSO provider handling that allow attackers to sign in as arbitrary users. Attackers can exploit domain verification parsing mismatches, orphaned provider accounts, unbound SAML assertions, or reflected XSS on logout endpoints to gain unauthorized session access and account takeover.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7