June 2026 monthly summary for infiniflow/ragflow focusing on security and migration reliability. Delivered a critical migration security fix by parameterizing SQL inserts for TenantModelProvider, replacing unsafe string interpolation in the MySQL migration script. This change mitigates SQL injection risks, ensures correct handling of special characters in tenant IDs and LLM factory names, and stabilizes migration across existing tenants. The work aligns with security best practices and reduces downtime risk during migrations.

May 2026 performance: Hardened multi-tenant security and deterministic API routing across the ragflow and penpot repositories, delivering measurable business value through stronger data isolation, accurate user attribution, and stable deployment-time health checks. Key outcomes include memory access security enhancements, dataset/file authorization fixes, tenant-aware retrieval flows, and thumbnail edit permission enforcement. These changes reduce cross-tenant data leakage, prevent unauthorized modifications, and improve auditability and stability for production workloads. Technologies demonstrated include Python-based back-end services, JWT and API-token authentication handling, RESTful design, and regression testing with unit/integration coverage.