Release notes

MetaDefender Storage Security v4.0.1 (Hotfix)

Release Date: August 25, 2025

Version supported until February 25, 2027

  • SMTP Re-activation Issue

    • Fixed a critical functionality bug where SMTP service could not be re-activated after being deactivated, rendering email notifications permanently unusable until system intervention.

  • Database Migration Report Recovery

    • Resolved issues where scan reports became inaccessible after upgrading from previous versions (3.5.1/3.6.1), particularly affecting canceled scans and PDF export functionality during database migration processes.

  • Multi-tenancy Filter Disabled for MDSS Cloud

    • Temporarily disabled PostgreSQL tenant ID filtering for cloud deployments as the multitenancy feature is not yet complete, preventing authentication and permission issues for Tenant Admin users until proper tenant configuration is implemented.

MetaDefender Storage Security v4.0.0

Release Date: August 12, 2025

Version supported until February 12, 2027

Highlights

  • Migrated from MongoDB to PostgreSQL 17 to align with MetaDefender Core and ICAP Server. This simplifies deployments and improves performance for complex queries and large datasets.

  • The new Workflows feature creates an automated security processing pipeline:

    • 5-stage security processing: Scan Configuration → Advanced Threats → Vulnerabilities → Sanitization → File Tagging
    • Automatically sorts files into Original, Allowed, Blocked, and Sanitized categories
    • Executes automated actions (Copy, Move, Delete) based on scan results
    • Process thousands of files without manual intervention

  • Security Updates

    • New account creation and login flows
    • Enhanced encryption key handling and secure key rotation
    • Security patches for known vulnerabilities

Improvements

  • Performance

    • Upgraded RabbitMQ to version 4.1
    • Enhanced SharePoint Cloud real-time processing
    • Custom date range functionality in Dashboard

  • Integration

    • Upgraded Microsoft Graph SDK to version 5.79.0
    • Added automatic file tagging for Google Cloud Platform
    • Extended AWS regional support

  • Platform

    • Updated PostgreSQL documentation
    • Improved Azure AD configuration guide
    • Better error handling

This release focuses on database modernization and workflow automation while maintaining platform stability.
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