As many as 145 npm packages associated with the Mastra namespace ("@mastra/*"), a popular open-source JavaScript and TypeScript framework for building artificial intelligence (AI) applications, have been compromised as part of a software supply chain attack codenamed easy-day-js, per findings from Endor Labs, JFrog, OX Security, SafeDep, Socket, StepSecurity, and Synk.

"A single npm account (