CVE-2025-32421 - Next.js Race Condition Page Prop Exposure

CVE-2025-32421 - Next.js Race Condition Page Prop Exposure

https://cvefeed.io/rssfeed/latest.atom / Thu, 05/15/2025 - 05:40
CVE ID : CVE-2025-32421
Published : May 14, 2025, 11:15 p.m. | 3 hours, 55 minutes ago
Description : 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.
Severity: 3.7 | LOW
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