CVE-2026-23869

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Summary

CVECVE-2026-23869
StatePUBLISHED
AssignerMeta
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-08 20:16:23 UTC
Updated2026-04-08 21:26:13 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.004230000 probability, percentile 0.621390000 (date 2026-04-14)

Problem Types: CWE-400 | CWE-502 | (CWE-502) Deserialization of Untrusted Data, (CWE-400) Uncontrolled Resource Consumption | CWE-502 CWE-502 Deserialization of Untrusted Data | CWE-400 CWE-400 Uncontrolled Resource Consumption

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Meta React-server-dom-turbopack affected 19.0.0 19.0.4 semver Not specified
CNA Meta React-server-dom-turbopack affected 19.1.0 19.1.5 semver Not specified
CNA Meta React-server-dom-turbopack affected 19.2.0 19.2.4 semver Not specified
CNA Meta React-server-dom-parcel affected 19.0.0 19.0.4 semver Not specified
CNA Meta React-server-dom-parcel affected 19.1.0 19.1.5 semver Not specified
CNA Meta React-server-dom-parcel affected 19.2.0 19.2.4 semver Not specified
CNA Meta React-server-dom-webpack affected 19.0.0 19.0.4 semver Not specified
CNA Meta React-server-dom-webpack affected 19.1.0 19.1.5 semver Not specified
CNA Meta React-server-dom-webpack affected 19.2.0 19.2.4 semver Not specified

References

ReferenceSourceLinkTags
github.com/facebook/react/security/advisories/GHSA-479c-33wc-g2pg [email protected] github.com
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