CVE-2025-71404 Details
Description
better-auth versions after v0.0.2 and before 1.1.16 contain a reflected cross-site scripting (XSS) vulnerability on the /api/auth/error page, where the value of the 'error' URL parameter is reflected as HTML without proper neutralization. An attacker who coerces a user into visiting a specially-crafted URL can execute arbitrary JavaScript in the context of the user's browser. The issue is fixed in version 1.1.16.
A reflected cross-site scripting vulnerability has been identified in better-auth, affecting versions after 0.0.2 and prior to 1.1.16. The issue resides on the '/api/auth/error' page, where the 'error' URL parameter is reflected as HTML without adequate sanitization. This flaw allows an attacker to execute arbitrary JavaScript in the context of the user's browser by tricking them into clicking a specially crafted link.
Users can upgrade to better-auth version 1.1.16 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 1, 2026CISA-ADP
Assessed Aug 3, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| better-auth | >= 0.0.2, < 1.1.16 (semver) |
CPE
Remediation
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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] |