CVE-2025-71403 (GCVE-0-2025-71403)
Vulnerability from cvelistv5
Published
2026-08-01 12:22
Modified
2026-08-03 18:18
Severity ?
7.1 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
7.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
CWE
  • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Summary
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.
References
Impacted products
Vendor Product Version
better-auth better-auth Version: 0   ≤
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