A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.
Is CVE-2025-55182 exploited?
Listed in the CISA KEV catalog on 2025-12-05.
Federal remediation due 2025-12-12.
Past that date by 292 days.
Used in ransomware campaigns.
EPSS puts exploitation in the next 30 days at 99.8%.
Public exploit code: packaged in a public tool.
Public detection rules exist.
Which products and versions are affected?
Meta · react-server-dom-webpack · 19.0.0, 19.1.0 - 19.1.1, 19.2.0
Meta · react-server-dom-turbopack · 19.0.0, 19.1.0 - 19.1.1, 19.2.0
Meta · react-server-dom-parcel · 19.0.0, 19.1.0 - 19.1.1, 19.2.0