Allocation of Resources Without Limits or Throttling Affecting react-server-dom-parcel package, versions >=19.1.0 <19.1.6>=19.2.0 <19.2.5
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Test your applications- Snyk IDSNYK-JS-REACTSERVERDOMPARCEL-15953375
- published9 Apr 2026
- disclosed8 Apr 2026
- creditUnknown
Introduced: 8 Apr 2026
NewCVE-2026-23869 (opens in a new tab)How to fix?
Upgrade react-server-dom-parcel to version 19.1.6, 19.2.5 or higher.
Overview
react-server-dom-parcel is a React Server Components bindings for DOM using Parcel. This is intended to be integrated into meta-frameworks. It is not intended to be imported directly.
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.