CVE-2026-23869

Published: Apr 8, 2026Updated: Jul 25, 2026 Sources: CVE List NVDCWE-400

7.5HIGH

NVD MITRE

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

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-400 CWE-502 CWE-770

Affected Products

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

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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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