IronWorm and Miasma Worm Supply Chain Attacks on npm - June 2026
In early June 2026, the npm ecosystem faced significant supply chain attacks involving the IronWorm and a new variant of the Miasma worm. Threat actors compromised over 50 legitimate npm packages to distribute a Rust-based information stealer and a self-propagating worm. The IronWorm malware, concealed by an eBPF kernel rootkit, harvested sensitive data from developers' machines and propagated by injecting malicious code into GitHub repositories. Concurrently, the Miasma worm variant targeted 57 npm packages, deploying credential-stealing payloads that executed during package installation, compromising cloud credentials and CI/CD secrets. These attacks underscore the escalating threats to software supply chains, emphasizing the need for robust security measures in package management and development workflows. The rapid propagation and sophisticated techniques employed highlight the urgency for organizations to enhance their defenses against such evolving threats.
Kill Chain