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OpenAdvisories
High · 7.5 CVE-2025-49826 EUVD-2025-19910GHSA-67rr-84xm-4c7r

Next.js DoS vulnerability via cache poisoning

Published Jul 3, 2025 · Updated Jul 8, 2025 · Assigned by GitHub_M

Description

Next.js is a React framework for building full-stack web applications. From versions 15.0.4-canary.51 to before 15.1.8, a cache poisoning bug leading to a Denial of Service (DoS) condition was found in Next.js. This issue does not impact customers hosted on Vercel. Under certain conditions, this issue may allow a HTTP 204 response to be cached for static pages, leading to the 204 response being served to all users attempting to access the page. This issue has been addressed in version 15.1.8.

Affected products

VendorProductAffectedFixed
vercel next.js >= 15.0.4-canary.51, < 15.1.8 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm next >= 15.0.4-canary.51, < 15.1.8 15.1.8 GHSA-67rr-84xm-4c7r

Advisories 1

References