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CVE-2025-67779 — Denial of Service Vulnerability in...

HIGH

Denial of Service Vulnerability in React Server Components

Published December 12, 2025Updated December 12, 2025Source: osv

Summary

## Impact It was found that the fix to address [CVE-2025-55184](https://github.com/facebook/react/security/advisories/GHSA-2m3v-v2m8-q956) in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. We recommend updating immediately. The vulnerability exists in versions 19.0.2, 19.1.3, and 19.2.2 of: - [react-server-dom-webpack](https://www.npmjs.com/package/react-server-dom-webpack) - [react-server-dom-parcel](https://www.npmjs.com/package/react-server-dom-parcel) - [react-server-dom-turbopack](https://www.npmjs.com/package/react-server-dom-turbopack?activeTab=readme) These issues are present in the patches published on December 11th, 2025. ## Patches Fixes were back ported to versions 19.0.3, 19.1.4, and 19.2.3. If you are using any of the above packages please upgrade to any of the fixed versions immediately. If your app’s React code does not use a server, your app is not affected by this vulnerability. If your app does not use a framework, bundler, or bundler plugin that supports React Server Components, your app is not affected by this vulnerability. ## References See the [blog post](https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components) for more information and upgrade instructions.

Advisory Timeline

  • First published December 12, 2025 (304 days ago).
  • Last revised December 12, 2025 — 0 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm
Update react-server-dom-turbopack to 19.2.3 or later
npm install react-server-dom-turbopack@19.2.3
npm
Update react-server-dom-webpack to 19.0.3 or later
npm install react-server-dom-webpack@19.0.3
npm
Update react-server-dom-webpack to 19.2.3 or later
npm install react-server-dom-webpack@19.2.3
npm
Update react-server-dom-turbopack to 19.0.3 or later
npm install react-server-dom-turbopack@19.0.3
npm
Update react-server-dom-parcel to 19.2.3 or later
npm install react-server-dom-parcel@19.2.3
npm
Update react-server-dom-parcel to 19.0.3 or later
npm install react-server-dom-parcel@19.0.3
npm
Update react-server-dom-turbopack to 19.1.4 or later
npm install react-server-dom-turbopack@19.1.4
npm
Update react-server-dom-parcel to 19.1.4 or later
npm install react-server-dom-parcel@19.1.4
npm
Update react-server-dom-webpack to 19.1.4 or later
npm install react-server-dom-webpack@19.1.4

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (9)

Affects 1 ecosystem: npm (3).

PackageEcosystemAffectedFixed In
react-server-dom-turbopack
npm
All versions19.2.3
react-server-dom-webpack
npm
All versions19.0.3
react-server-dom-webpack
npm
All versions19.2.3
react-server-dom-turbopack
npm
All versions19.0.3
react-server-dom-parcel
npm
All versions19.2.3
react-server-dom-parcel
npm
All versions19.0.3
react-server-dom-turbopack
npm
All versions19.1.4
react-server-dom-parcel
npm
All versions19.1.4
react-server-dom-webpack
npm
All versions19.1.4

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-400
    Uncontrolled Resource ConsumptionMITRE
  • CWE-502
    Deserialization of Untrusted DataMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

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

References

Frequently Asked Questions

What is CVE-2025-67779?
Denial of Service Vulnerability in React Server Components This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2025-67779?
CVE-2025-67779 affects react-server-dom-turbopack, react-server-dom-webpack and react-server-dom-parcel. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-67779 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-7gmr-mq3h-m5h9

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