Origin validation error in Next.js - CVE-2025-13984
Published: December 4, 2025
Vulnerability identifier: #VU119127
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-13984
CWE-ID: CWE-346
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: rrrob
Affected software:
Next.js
Next.js
Detailed vulnerability description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to the cross-origin resource sharing (CORS) enables browsers to perform cross domain requests in a controlled manner. A remote attacker can make cross-origin requests to the site without administrator knowledge or consent.
How to mitigate CVE-2025-13984
Install updates from vendor's website.