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CVE-2025-71403 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.7 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

CNA: [email protected]CVSS-B:7.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/better-auth/better-auth/security/advisories/GHSA-vp58-j275-797x	[email protected]	AdvisoryRemedyVendor
https://www.vulncheck.com/advisories/better-auth-before-open-redirect-via-trustedorigins-bypass	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-601	URL Redirection to Untrusted Site ('Open Redirect')	[email protected]

Affected Products

Product	Versions
better-auth	< 1.1.20 (semver)
CPE cpe:2.3:a:better-auth:better_auth::::::node.js::* Remediation Upgrade: 1.1.21moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Aug 3, 2026	CVE Modified	CISA-ADP
Aug 1, 2026	New CVE Received	[email protected]