www.securityweek.com 5/22/2026, 8:17:27 AM · external

Grafana hit by TanStack breach, data stolen, ransom refused

Grafana hit by TanStack breach, data stolen, ransom refused
CyberSIXT Evidence Panel
Primary Source grafana.com

GRAFANA confirmed that unauthorized access to its GitHub repositories was a result of the TanStack supply chain attack, which took place on May 11.

Key points include:\n- Malicious activity detected led to the rotation of GitHub workflow tokens, but one was not revoked, resulting in data theft. \n- Grafana received a ransom demand on May 16 but refused to pay, enhancing its security measures and notifying law enforcement. \n- Although the codebase was stolen, it was not modified or used in any production systems, and no

action is needed from users. \n- The incident is isolated to GitHub repositories and has not impacted Grafana’s operational systems or the Grafana Cloud platform.

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