Vulnerability Intelligence Report
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.
No Active Exploit Signals
CVSS Base Score
7.5
HIGH
Exploitability:3.9
Impact Score:3.6
EPSS Probability:2.50%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Weaknesses (CWE)
CWE-502 ↗(CWE-502): Deserialization of Untrusted Data. (CWE-400): Uncontrolled Resource Consumption
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Meta | react-server-dom-webpack | 19.0.0 < 19.0.4 (affected), 19.1.0 < 19.1.5 (affected), 19.2.0 < 19.2.4 (affected) |
| Meta | react-server-dom-turbopack | 19.0.0 < 19.0.4 (affected), 19.1.0 < 19.1.5 (affected), 19.2.0 < 19.2.4 (affected) |
| Meta | react-server-dom-parcel | 19.0.0 < 19.0.4 (affected), 19.1.0 < 19.1.5 (affected), 19.2.0 < 19.2.4 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
2.499%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Meta Platforms, Inc. · Vendor · USA |
| Reserved | 2026-01-16T19:49:26 |
| Published | 2026-01-26T19:16:38 |
| Last Updated | 2026-07-15T01:18:01 |
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