LWA-2026-12918 MAL-2026-5017 ↗ confirmed malware

@mlspace/env-jupyter-server@99.99.99

Malicious code in @mlspace/env-jupyter-server (npm)

T1071 · Application Layer ProtocolT1041 · Exfiltration Over C2 Channel

Analysis

Dependency-confusion stub combosquatting jupyter-server in the @mlspace namespace at version 99.99.99, a ~7.5KB bundle with a postinstall lifecycle hook. The scripts/postinstall.js contains the command-and-control domain oob[.]moika[.]tech. Published from a throwaway account in a publish-and-burn pattern; later removed from the registry.

analyzed by
Leitwacht
first seen
May 28, 2026, 09:02 AM
analyzed
Jun 1, 2026, 06:56 PM

Related advisories

browse all confirmed advisories →

Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.