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CVE-2026-23869

Published: Apr 8, 2026Updated: Apr 8, 2026 Sources: CVE List NVDCWE-400
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.9%
Top 43.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-400CWE-502

Affected Products

react-server-dom-turbopackMeta
Library
OSS Libraries / web-framework
react-server-dom-parcelMeta
Library
OSS Libraries / web-framework
react-server-dom-webpackMeta
Library
OSS Libraries / web-framework
metacommercialUSOSS Librariesaka react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

4 techniques
Execution
Impact
Initial Access
View detailed technique mapping

References

https://github.com/facebook/react/security/advisories/GHSA-479c-33wc-g2pg
github.com

Timeline

Published
Apr 8, 2026
Last Updated
Apr 8, 2026

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