CVE-2025-49826

published 2025-07-03

CVE-2025-49826: 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…

Priority P3 42 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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

4 ranges

Vendor	Product	Version range	Fixed in
next	next	>= 15.0.4-canary.51 < 15.1.8	15.1.8
vercel	next.js	< 15.1.8	15.1.8
vercel	next.js	—	—
vercel	next.js	—	—

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

ghsa 7.5 HIGH

osv 7.5 HIGH

vendor_redhat 7.5 HIGH

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CWE-444