Allocation of Resources Without Limits or Throttling Affecting next package, versions >=13.0.0 <15.5.15>=15.6.0-canary.0 <16.2.3
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Test your applications- Snyk IDSNYK-JS-NEXT-15954202
- published9 Apr 2026
- disclosed8 Apr 2026
- creditUnknown
Introduced: 8 Apr 2026
NewCVE-2026-23869 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade next to version 15.5.15, 16.2.3 or higher.
Overview
next is a react framework.
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the createMap, createSet, and extractIterator functions in packages/react-server/src/ReactFlightReplyServer.js. An attacker can crash the server by supplying a model that contains cyclic reference and is consumed more than once during React Server Components decoding. The repeated consumption triggers an exception during reply processing, breaking rendering for requests that handle attacker-controlled Flight payloads.