CVE-2025-71403CWE-601

CVE-2025-71403

High · published August 1, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
26.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00342 · 26.4th percentile
Weakness
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
Published
2026-08-01T17:16Z
References (2)
https://github.com/better-auth/better-auth/security/advisories/GHSA-vp58-j275-797x · [email protected]https://www.vulncheck.com/advisories/better-auth-before-open-redirect-via-trustedorigins-bypass · [email protected]
EPSS history
Timeline
  • 01 AUG 12:22Z
    better-auth before 1.1.20 Open Redirect via trustedOrigins Bypass
    cvelistv5