Metabase SQLi Zero-Day Exploited to Steal Customer Data
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A critical unauthenticated SQL injection vulnerability in Metabase (v1.58+) was actively exploited before a patch was available, allowing attackers to gain administrator access and exfiltrate sensitive customer data. Because the flaw required no authentication, any internet-exposed Metabase instance was immediately at risk without any user interaction. Companies like Framework and Tally confirmed real customer data theft, demonstrating that zero-days in business intelligence and analytics tools can serve as a direct pathway to sensitive datasets. This incident highlights the danger of exposing data-rich internal tools directly to the internet and the critical importance of rapid patch deployment and compensating controls when patches are unavailable.
Tactical Insight
Immediate actions
- Apply the vendor-released patch or upgrade Metabase to the latest fixed version immediately across all self-hosted and cloud-managed instances.
- Restrict public internet access to Metabase instances by placing them behind a VPN or internal network boundary as a compensating control.
- Audit Metabase administrator accounts and rotate all credentials, API keys, and database connection secrets that may have been exposed.
Detection measures
- Deploy a Web Application Firewall (WAF) with SQLi detection rules specifically tuned for Metabase API endpoints.
- Review logs for anomalous unauthenticated requests, unusual admin account activity, or unexpected data export operations originating from external IPs.
- Subscribe to Metabase security advisories and integrate them into your threat intelligence feed for early warning of future vulnerabilities.
Long-term improvements
- Maintain a complete, up-to-date inventory of all third-party SaaS and self-hosted analytics tools that have access to customer data.
- Implement network segmentation so that analytics platforms can only reach the minimum required data sources, limiting blast radius in future breaches.
- Establish a formal zero-day response playbook that defines pre-approved compensating controls (e.g., WAF rules, network isolation) to deploy within hours of a critical disclosure.