Is CVE-2026-67328 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-67328?

CVE-2026-67328 has a CVSS v3 severity of HIGH (8.1).

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CVE-2026-67328

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.