CVE-2025-71403EPSS p25.5%

CVE-2025-71403CVE-2025-71403

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.

Scoring

CVSS 7.1 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
EPSS0.34% probability of exploitation · percentile 25.5% · 2026-10-06T12:00:23Z
Last modified2026-10-06
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.