A sophisticated software supply chain attack named ChainDrop has infected hundreds of npm packages, including popular caching libraries with millions of weekly downloads. Beginning August 4, 2026, attackers compromised a GitHub account of a keyv package maintainer, injecting malicious code into legitimate repositories. The malware executes credential-stealing payloads targeting developer workstations and CI/CD runners, harvesting npm tokens, GitHub credentials, cloud access keys, SSH keys, and database credentials. Using stolen credentials, the worm self-propagates by compromising additional repositories and publishing poisoned packages with valid provenance attestations. ChainDrop employs Bun runtime for execution, establishes persistence through developer tool configurations, and exfiltrates encrypted data using blockchain-based command-and-control infrastructure. This campaign represents an evolution of the Shai-Hulud npm worm.
A fresh wave of the Miasma Mini Shai-Hulud supply chain campaign compromised legitimate npm packages under the @immobiliarelabs scope on June 26, 2026. The attack targeted Backstage plugins used for GitLab integration and LDAP authentication, affecting 22 package versions across multiple releases. The malware employs sophisticated techniques including hidden payloads that bypass standard package reviews, steals developer credentials and CI/CD secrets, and exploits GitHub Actions workflows for propagation. The campaign appears linked to a compromised upstream GitHub Action (codfish/semantic-release-action) and leverages deployment-triggered workflows for execution. Stolen credentials include npm tokens, GitHub tokens, cloud credentials, SSH keys, and various authentication secrets, which are exfiltrated to attacker-controlled repositories for further propagation across the ecosystem.