Vulnerability Details CVE-2026-23864
Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack.
The vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code.
Strongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in applications using React Server Components.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.008
EPSS Ranking 73.5%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-23864
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cpe:2.3:a:facebook:react:19.0.0
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cpe:2.3:a:facebook:react:19.0.1
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cpe:2.3:a:facebook:react:19.0.2
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cpe:2.3:a:facebook:react:19.0.3
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cpe:2.3:a:facebook:react:19.1.0
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cpe:2.3:a:facebook:react:19.1.1
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cpe:2.3:a:facebook:react:19.1.2
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cpe:2.3:a:facebook:react:19.1.3
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cpe:2.3:a:facebook:react:19.1.4
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cpe:2.3:a:facebook:react:19.2.0
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cpe:2.3:a:facebook:react:19.2.1
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cpe:2.3:a:facebook:react:19.2.2
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cpe:2.3:a:facebook:react:19.2.3