Resource management error in Next.js - CVE-2026-27979
Published: March 17, 2026
Vulnerability identifier: #VU124060
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L]
CVE-ID: CVE-2026-27979
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the application when handling HTTP requests with "next-resume: 1" HTTP header. A remote attacker can send large HTTP POST payloads to the application and to trigger excessive memory usage and cause a denial of service condition.
Affected software
Next.js
How to mitigate CVE-2026-27979
Install updates from vendor's website.
Next.js - update to 16.1.7