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From Misconfigured Spring Boot Actuator to SharePoint Exfiltration: How Stolen Credentials Bypass MFA
March 18, 2026 · Trend Micro · Severity: CRITICAL
From Misconfigured Spring Boot Actuator to SharePoint Exfiltration: How Stolen Credentials Bypass MFA. Not every cloud breach starts with malware or a zero-day. In this incident, attackers discovered an exposed Spring Boot Actuator endpoint, harvested credentials from leaked configuration data, then used the OAuth2 Resource Owner Password Credentials (ROPC) flow to authenticate without MFA. Organizations should treat this as an active threat and take immediate defensive action.
Key Takeaways
- Analysis reveals how From Misconfigured Spring Boot Actuator to SharePoint Exfiltration infects and persists on target systems.
- Critical severity rating indicates active exploitation risk requiring immediate remediation across affected environments.
- Organizations must audit third-party dependencies and implement software bill of materials (SBOM) for supply chain security.