Resource exhaustion in Next.js - #VU130276
Published: May 6, 2026
Vulnerability identifier: #VU130276
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Next.js
Next.js
Software vendor:
vercel
vercel
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper request handling in the Cache Components feature when processing crafted POST requests to a server action. A remote attacker can send a specially crafted request to cause a denial of service.
Only applications using Partial Prerendering through the Cache Components feature are vulnerable. The issue can trigger a request-body handling deadlock that leaves connections open for an extended period, consuming file descriptors and server capacity.
Remediation
Install security update from vendor's website.