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CVE-2026-94543

CVE-2026-94543 · Next.js: Cache poisoning of SSG and ISR pages in self-hosted Next.js applications

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Next.js is a React framework for building full-stack web applications. From 15.0.0 until 15.5.27 and 16.3.8, self-hosted applications using the Pages Router with statically generated or Incremental Static Regeneration pages can key a response cache entry without sufficiently binding it to the source route. A request can replace one page's cache entry with content from a different route, causing the affected page to serve incorrect content to every visitor until revalidation. Applications deployed on Vercel are not affected. This issue is fixed in versions 15.5.27 and 16.3.8.

CVSS 6.3 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • next.js

    Versions
    • >= 15.0.0, < 15.5.27: Affected
    • >= 16.0.0, < 16.3.8: Affected

    No fix published

  • next npm

    Affected ranges
    • SEMVER: ≥ 15.0.0, < 15.5.27

    Update to 15.5.27

  • next npm

    Affected ranges
    • SEMVER: ≥ 16.0.0, < 16.3.8

    Update to 16.3.8

Original sources

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