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

- Exploited (CISA KEV): no
- Published: 2024-10-14
- CVSS: 5.9 MEDIUM (v3.1)
- EPSS: 0.7% (54th percentile)
- CWE: CWE-674

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2025-04-28 | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2025-04-28 · updated · rule 200012090
  > Updated: signature 200012090 "Next.js Image Optimizer Denial of Service" (Denial of Service, risk Medium), systems: JavaScript, ReactJS. References: CVE-2024-47831.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2025-05-22 · updated · rule 200012090
  > Updated: signature 200012090 "Next.js Image Optimizer Denial of Service" (Denial of Service, risk Medium), systems: JavaScript, ReactJS. References: CVE-2024-47831.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2024-47831 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2024-47831