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CVE-2026-94484

CVE-2026-94484 · Next.js: Cache poisoning in Next.js SSG/ISR rendering leads to cross-user content substitution and persistent denial of service

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, applications with a root-level catch-all page and statically generated or Incremental Static Regeneration routes can use a shared response cache key that is insufficiently scoped to the source route. A single unauthenticated crafted request can poison that cache, causing cross-user content substitution or persistent denial of service until the poisoned entry is revalidated or replaced. This issue is fixed in versions 15.5.27 and 16.3.8.

CVSS 6.3 · Medium · EPSS 0.2% · 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: ≥ 16.0.0, < 16.3.8

    Update to 16.3.8

  • next npm

    Affected ranges
    • SEMVER: ≥ 15.0.0, < 15.5.27

    Update to 15.5.27

Original sources

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