THREAT OPS › Threat News › [NVD] CVE-2025-71403 (HIGH 7.1) — 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
[NVD] CVE-2025-71403 (HIGH 7.1) — 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
CVE-2025-71403 CVSS: 7.1 HIGH Published: 2026-08-01T13:16:56.607
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.
Indicators of compromise
- CVE-2025-71403cve
Original source: https://nvd.nist.gov/vuln/detail/CVE-2025-71403