CVE-2025-71403
HIGH
NVD
CVSS Score
7.1
Severity
HIGH
Published
Aug 01, 2026
Vendor
unknown
Description
better-auth versions before 1.1.20 contain a bypass vulnerability in trustedOrigins validation logic affecting absolute URLs and wildcard domains. Attackers can construct malicious callbackURL parameters that pass origin checks and trigger open redirects to steal sensitive tokens for account takeover.