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

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-94484

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-94484

next.js

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "vercel",
    "product": "next.js",
    "versions": [
      {
        "status": "affected",
        "version": ">= 15.0.0, < 15.5.27"
      },
      {
        "status": "affected",
        "version": ">= 16.0.0, < 16.3.8"
      }
    ]
  }
]
Related CVEs
CVE-2026-94484

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#8929 · Revision 1
Added to Heist Feed
Publisher date
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