Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. This issue has been fixed in versions 15.5.21 and 16.2.11.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20
    and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least
    one Server Action can lead to excessive CPU usage blocking processing of further requests in the same
    process. This issue has been fixed in versions 15.5.21 and 16.2.11. (CVE-2026-64641)

The Next.js Framework on the remote host is affected by a denial of service vulnerability:

  - Crafted requests targeting Next.js applications using App Router with at least one Server Action can lead     to excessive CPU usage blocking processing of further requests in the same process. (CVE-2026-64641)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
461311	Echo: next: security update to 15.5.21	Tenable Cloud Security	Echo Local Security Checks	Local	high
461311	Echo: next: security update to 15.5.21	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
330089	Next.js Framework 13.x < 15.5.21 / 16.x < 16.2.11 DoS	Nessus	Misc.	Local	high
445140	SCA: security update for next (GHSA-m99w-x7hq-7vfj)	Tenable Cloud Security	SCA Checks	Local	high
445140	SCA: security update for next (GHSA-m99w-x7hq-7vfj)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-64641

high

Tenable Plugins

high

high

high

high

high