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Suspicious React Server Child Process

This rule detects suspicious child process activity from a React server application. This could be related to successful exploitation of CVE-2025-55182 or CVE-2025-66478. These vulnerabilities allow attackers to…

Description

This rule detects suspicious child process activity from a React server application. This could be related to successful exploitation of CVE-2025-55182 or CVE-2025-66478. These vulnerabilities allow attackers to execute remote code due to insecure deserialization of React Server Components (RSC) Flight payloads, leading to unauthenticated RCE on servers running React 19.x or Next.js 14.3.0-canary+, 15.x, and 16.x with the App Router enabled

Detection logic

Its licence does not clear it for publishing here

Sunturai publishes a detection's own text where the licence it arrived under has been reviewed and permits it, and Elastic License 2.0 has not. The query as its source wrote it, its canonical form and the hash that pins this revision are in the workspace record.

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Detection requirements

Platform
ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows

The rule states no platform. This is derived from the 5 ATT&CK techniques it maps to.

Log source category
event_index

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