CVE-2025-55183: additional act vulnerabilities (CVE-2025-55183, CVE-2025-55184, CVE-2025-67779)
## Impact There is a source code exposure vulnerability in React Server Components. React recommends updating immediately. The vulnerability exists in versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1 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 last week. ## Patches Fixes were back ported to versions 19.0.2, 19.1.3, and 19.2.2. 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-55183?
CVE-2025-55183 has been classified as a moderate severity vulnerability due to potential information leaks.
How do I fix CVE-2025-55183?
To fix CVE-2025-55183, upgrade to the latest version of the affected packages, specifically versions above 19.2.1.
What software is affected by CVE-2025-55183?
CVE-2025-55183 affects React Server Components versions 19.0.0 through 19.2.1, including react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack.
What type of vulnerability is CVE-2025-55183?
CVE-2025-55183 is an information leak vulnerability that can expose sensitive data under specific configurations.
Is there a workaround for CVE-2025-55183?
Currently, the best workaround for CVE-2025-55183 is to avoid using the affected versions until an upgrade is possible.