HIGH 7.1 NVD
CVE-2025-71403
better-auth versions before 1.1.20 contain a bypass vulnerability in trustedOrigins validation logic affecting absolute URLs and wildcard domains. Attackers can
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
- https://github.com/better-auth/better-auth/security/advisories/GHSA-vp58-j275-797x
- https://www.vulncheck.com/advisories/better-auth-before-open-redirect-via-trustedorigins-b
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-08-01 via NVD.
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