
CrowdSec Breach: How TanStack NPM Supply Chain Attack Exposed 170 Private Repositories
In May 2026, CrowdSec suffered a significant data breach when attackers leveraged the TanStack npm supply chain attack (CVE-2026-45321) to compromise a former employee's laptop and steal GitHub credentials. The attackers used these credentials to copy 170 private GitHub repositories containing source code, consensus algorithms, and sensitive data including 83 user email addresses and 51 potential investor details. The breach was discovered in September 2026 when the stolen code appeared on online forums, revealing critical intellectual property and operational thresholds. This incident exemplifies the growing threat of supply chain attacks targeting developer environments and highlights the cascading impact when credential hygiene practices fail during employee transitions.
Kill Chain
