A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through 19.2.4). The vulnerability is triggered by sending specially crafted HTTP requests to Server Function endpoints.The payload of the HTTP request causes excessive CPU usage for up to a minute ending in a thrown error that is catchable.
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Affected Vendors & Products
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History
Thu, 09 Apr 2026 08:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | CPU‑Exhaustion Denial of Service in React Server Components | |
| First Time appeared |
Facebook
Facebook react-server-dom-parcel Facebook react-server-dom-turbopack Facebook react-server-dom-webpack |
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| Vendors & Products |
Facebook
Facebook react-server-dom-parcel Facebook react-server-dom-turbopack Facebook react-server-dom-webpack |
Wed, 08 Apr 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-400 CWE-502 |
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| Metrics |
ssvc
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Wed, 08 Apr 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through 19.2.4). The vulnerability is triggered by sending specially crafted HTTP requests to Server Function endpoints.The payload of the HTTP request causes excessive CPU usage for up to a minute ending in a thrown error that is catchable. | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Meta
Published: 2026-04-08T19:11:08.418Z
Updated: 2026-04-08T19:56:22.791Z
Reserved: 2026-01-16T19:49:26.309Z
Link: CVE-2026-23869
Updated: 2026-04-08T19:53:45.958Z
Status : Awaiting Analysis
Published: 2026-04-08T20:16:23.003
Modified: 2026-04-08T21:26:13.410
Link: CVE-2026-23869
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