OpenSSF/OSV advisory MAL-2025-41439 confirms this npm version as malicious. The nx project and associated plugins were compromised via a vulnerable GitHub workflow that allowed code injection and the theft of an NPM token.
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @nx/js (npm)
Details
The nx project and associated plugins were compromised via a vulnerable GitHub workflow that allowed code injection and the theft of an NPM token.
Decision reason
OpenSSF Malicious Packages via OSV confirms @nx/js@20.9.0 as malicious (MAL-2025-41439): Malicious code in @nx/js (npm)