CVE-2024-47831: Next.js image optimization has Denial of Service condition

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-10-14 · updated 2026-06-17
Weakness: CWE-674

Description

Next.js is a React Framework for the Web. Cersions on the 10.x, 11.x, 12.x, 13.x, and 14.x branches before version 14.2.7 contain a vulnerability in the image optimization feature which allows for a potential Denial of Service (DoS) condition which could lead to excessive CPU consumption. Neither the `next.config.js` file that is configured with `images.unoptimized` set to `true` or `images.loader` set to a non-default value nor the Next.js application that is hosted on Vercel are affected. This issue was fully patched in Next.js `14.2.7`. As a workaround, ensure that the `next.config.js` file has either `images.unoptimized`, `images.loader` or `images.loaderFile` assigned.

Affected products

Next.js: from 10.0.0 before 14.2.7 — fixed in 14.2.7
Npm Next: from 10.0.0 before 14.2.7 — fixed in 14.2.7

How to fix

Upgrade to a fixed version: Next.js 14.2.7; Npm Next 14.2.7. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2024-47831 or the next vulnerability affects your stack