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CVE-2026-23869

Published: Apr 8, 2026Updated: Jul 25, 2026 Sources: CVE List NVDCWE-400
7.5HIGH
NVD MITRE
EPSS Score
1.6%
Top 27.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

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-502CWE-770

Affected Products

Meta
commercial·USaka react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack
react-server-dom-turbopackLibrary
OSS Libraries / web-framework
react-server-dom-parcelLibrary
OSS Libraries / web-framework
react-server-dom-webpackLibrary
OSS Libraries / web-framework

Exploitability

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

Products CVE Techniques Tactics

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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
https://access.redhat.com/security/cve/CVE-2026-23869
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2456663
bugzilla.redhat.com
and 1 more references View all →

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