VDB
KO
HIGH

GHSA-m99w-x7hq-7vfj

Next.js: Denial of Service in App Router using Server Actions

Quick fix

GHSA-m99w-x7hq-7vfj — next: upgrade to the fixed version with the command below. 

npm install next@15.5.21

Details

## Impact

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.

## Workarounds

No workaround exists besides upgrading. Applications using Pages Router or not using Server Actions are not vulnerable.

Are you affected?

Enter the version of the package you're using.

Affected packages

npm / next
Introduced in: 13.0.0 Fixed in: 15.5.21
Fix npm install next@15.5.21
npm / next
Introduced in: 16.0.0 Fixed in: 16.2.11
Fix npm install next@16.2.11

References