CVE-2026-27979 (GCVE-0-2026-27979)
Vulnerability from cvelistv5
Published
2026-03-18 00:13
Modified
2026-03-18 19:51
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
Next.js is a React framework for building full-stack web applications. Starting in version 16.0.1 and prior to version 16.1.7, a request containing the `next-resume: 1` header (corresponding with a PPR resume request) would buffer request bodies without consistently enforcing `maxPostponedStateSize` in certain setups. The previous mitigation protected minimal-mode deployments, but equivalent non-minimal deployments remained vulnerable to the same unbounded postponed resume-body buffering behavior. In applications using the App Router with Partial Prerendering capability enabled (via `experimental.ppr` or `cacheComponents`), an attacker could send oversized `next-resume` POST payloads that were buffered without consistent size enforcement in non-minimal deployments, causing excessive memory usage and potential denial of service. This is fixed in version 16.1.7 by enforcing size limits across all postponed-body buffering paths and erroring when limits are exceeded. If upgrading is not immediately possible, block requests containing the `next-resume` header, as this is never valid to be sent from an untrusted client.
Impacted products
Vendor Product Version
vercel next.js Version: >= 16.0.1, < 16.1.7
Create a notification for this product.
Show details on NVD website


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