What is CVE-2025-59471?

CVE-2025-59471 is a medium-severity vulnerability in Vercel Next, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2026-01-26.

How severe is CVE-2025-59471?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Resource exhaustion in Vercel Next

CVE-2025-59471

A denial of service vulnerability exists in self-hosted Next.js applications that have `remotePatterns` configured for the Image Optimizer. The image optimization endpoint (`/_next/image`) loads external images entirely into memory without…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.004 (35.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Vercel Next — versions 10.0, 11.0, 12.0
Vercel Next.js

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

support@hackerone.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-59471?: CVE-2025-59471 is a medium-severity vulnerability in Vercel Next, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2026-01-26.
How severe is CVE-2025-59471?: Medium severity. CVSS v3 base score is 5.9 out of 10.