CVE-2025-71403better-auth before 1.1.20 Open Redirect via trustedOrigins Bypass
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
- Weakness (CWE)
- CWE-601
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Aug 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
better-auth better-auth better_auth:better_auth (from the name) | before 1.1.20; 1.1.20 not affected | CNA record |
References
- https://github.com/better-auth/better-auth/security/advisories/GHSA-vp58-j275-797xvendor-advisory
- https://www.vulncheck.com/advisories/better-auth-before-open-redirect-via-trustedorigins-bypassthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.