Meta React Server Components Remote Code Execution Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 05/12/2025. Patch affected systems as an emergency. It is known to be used in ransomware campaigns.
| Package | Affected versions | Patched versions |
|---|---|---|
| react | = 19.0.0= 19.1.0= 19.1.1= 19.2.0 | |
| next.js | = 14.3.0= 15.6.0= 16.0.0≥ 15.0.0, < 15.0.5≥ 15.1.0, < 15.1.9≥ 15.2.0, < 15.2.6≥ 15.3.0, < 15.3.6≥ 15.4.0, < 15.4.8≥ 15.5.0, < 15.5.7≥ 16.0.0, < 16.0.7 | 15.0.515.1.915.2.615.3.615.4.815.5.716.0.7 |
| react-server-dom-parcel | ≥ 19.0.0, < 19.0.1≥ 19.1.0, < 19.1.2≥ 19.2.0, < 19.2.1 | 19.0.119.1.219.2.1 |
| react-server-dom-turbopack | ≥ 19.0.0, < 19.0.1≥ 19.1.0, < 19.1.2≥ 19.2.0, < 19.2.1 | 19.0.119.1.219.2.1 |
| react-server-dom-webpack | ≥ 19.0.0, < 19.0.1≥ 19.1.0, < 19.1.2≥ 19.2.0, < 19.2.1 | 19.0.119.1.219.2.1 |
There is an unauthenticated remote code execution vulnerability in React Server Components.
We recommend upgrading immediately.
The vulnerability is present in versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 of:
A fix was introduced in versions 19.0.1, 19.1.2, and 19.2.1. 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.
See the blog post for more information and upgrade instructions.
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