VULNERABILITY INTELLIGENCE
CVE-2025-71403
CVSS score7.1 HIGH
EPSS probability0.34%
CISA KEVNot currently listed
Published2026-08-01
Last modified2026-10-06
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
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.
Weakness classification
- disclosure@vulncheck.com: CWE-601