MalwarePublished 5 Aug 2026Updated 21 Aug 2026

react-native-ui-message (npm) · Malicious Code

Affects react-native-ui-messageSource GCVE Database

Malicious package : remove react-native-ui-message and rotate any secrets on hosts that installed it.

Data as of 21 Aug 2026, 16:29 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-12424

What to do

Remove react-native-ui-message from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmreact-native-ui-message	Affected =1.0.0	Fixed in–

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Description

The npm package react-native-ui-message version 1.0.0 contains malicious code executed during installation. It collects the host's MAC address and other environment details, sends them to a remote server, then downloads and executes arbitrary JavaScript code from that server without proper integrity verification. This behavior effectively compromises any system installing the package, allowing remote code execution controlled by the attacker.

Impact

Systems that install react-native-ui-message@1.0.0 are fully compromised due to arbitrary remote code execution during package installation. Attackers gain full control over the affected machine, potentially accessing all stored secrets and keys. Removal of the package does not guarantee elimination of all malicious artifacts, as the attacker may have established persistent control.

Defensive guidance

Remove the react-native-ui-message package immediately from all systems. Rotate all secrets and keys that were stored or accessible on affected machines from a secure, uncompromised environment. Due to the severity and nature of the compromise, consider rebuilding affected systems to ensure complete removal of malicious code.

Summary

The react-native-ui-message@1.0.0 package declares a postinstall hook that runs a script enumerating network interfaces to obtain the host's MAC address and sends this data along with OS and path information to a remote server. It then fetches JavaScript code from the server and executes it in a Node.js VM context with access to require, process, and Buffer, enabling arbitrary code execution on the installer's machine. The package falsely claims to be a simple React Native UI component and does not perform any meaningful integrity checks on the downloaded code, making the system fully compromised upon installation.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 21 Aug 2026, 16:29 UTC

Technical details

References

Community reviews