Allocation of Resources Without Limits or Throttling Affecting react-server-dom-turbopack package, versions >=19.0.0 <19.0.8>=19.1.0-canary-029e8bd6-20250306 <19.1.9>=19.2.0-canary-0038c501-20250429 <19.2.8
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published26 Jul 2026
- disclosed24 Jul 2026
- creditUnknown
Introduced: 24 Jul 2026
NewCVE-2026-44907 (opens in a new tab)How to fix?
Upgrade react-server-dom-turbopack to version 19.0.8, 19.1.9, 19.2.8 or higher.
Overview
react-server-dom-turbopack is a React Server Components bindings for DOM using Turbopack. 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 in the decodeAction and decodeFormState functions of ReactFlightActionServer.js, which perform action metadata decoding inside a loop over the submitted form fields. An attacker can drive quadratic CPU consumption and exhaust the server by submitting a Server Function request with many duplicate $ACTION_REF_ or $ACTION_ID_ form fields, each forcing a repeat of the expensive decodeBoundActionMetaData() processing. Exploitation affects only applications that expose React Server Functions through these server renderers and reaches the Flight reply decoder that handles Server Function submissions.
Note: The project maintainers note that "[i]f your app’s React code does not use a server, your app is not affected by this vulnerability. If your app does not use a framework, bundler, or bundler plugin that supports React Server Components, your app is not affected by this vulnerability."