CVE-2025-32421

published 2025-05-14

CVE-2025-32421: Next.js is a React framework for building full-stack web applications. Versions prior to 14.2.24 and 15.1.6 have a race-condition vulnerability. This issue…

Priority P4 16 low 3.7 CVSS 3.1

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

Next.js is a React framework for building full-stack web applications. Versions prior to 14.2.24 and 15.1.6 have a race-condition vulnerability. This issue only affects the Pages Router under certain misconfigurations, causing normal endpoints to serve `pageProps` data instead of standard HTML. This issue was patched in versions 15.1.6 and 14.2.24 by stripping the `x-now-route-matches` header from incoming requests. Applications hosted on Vercel's platform are not affected by this issue, as the platform does not cache responses based solely on `200 OK` status without explicit `cache-control` headers. Those who self-host Next.js deployments and are unable to upgrade immediately can mitigate this vulnerability by stripping the `x-now-route-matches` header from all incoming requests at the content development network and setting `cache-control: no-store` for all responses under risk. The maintainers of Next.js strongly recommend only caching responses with explicit cache-control headers.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
next	next	>= 0.9.9 < 14.2.24	14.2.24
next	next	>= 15.0.0 < 15.1.6	15.1.6
vercel	next.js	< 14.2.24	14.2.24
vercel	next.js	—	—
vercel	next.js	>= 15.0.0 < 15.1.6	15.1.6

CVSS provenance

nvd v3.1 3.7 LOW CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

vendor_redhat 3.7 LOW

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