Input validation error in next-auth - #VU138945
Published: July 21, 2026
Vulnerability identifier: #VU138945
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: NextAuth.js
Affected software:
next-auth
next-auth
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper input validation in the email sign-in flow when processing email-based authentication requests. A remote user can submit a crafted email sign-in request to disclose sensitive information.
Remediation
Install security update from vendor's website.