Axios npm Supply Chain Compromise – Guidance for Azure Pipelines Customers

On March 31, 2026, malicious versions of the widely used JavaScript HTTP client library Axios were briefly published to the npm registry as part of a supply chain attack. The affected versions — 1.14.1 and 0.30.4 — included a hidden malicious dependency that executed during installation and connected to attacker-controlled command-and-control (C2) infrastructure to retrieve a second-stage payload.