CVE-2026-67328
HIGH
NVD
CVSS Score
8.1
Severity
HIGH
Published
Aug 01, 2026
Vendor
unknown
Description
@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.