CVE-2025-71403 — better-auth before 1.1.20 Open Redirect via trustedOrigins Bypass
better-auth versions before 1.1.20 contain a bypass vulnerability in trustedOrigins validation logic affecting absolute URLs and wildcard domains. Attackers can construct malici…
Published: 2026-08-01 · CVSS: 7.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7