Why Global Scopes Fail When You Chain orWhere Without a Closure
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Multi-tenant Laravel applications depend on global scopes to enforce data isolation. A scope on the User model means every query automatically filters by tenant_id. It’s a foundation of security. But the moment a developer chains .orWhere() at the root level of a query without wrapping it in a closure, that foundation cracks. The scope no longer applies to half the OR condition. Data from other tenants leaks through.
This is not a theoretical problem. Multi-tenant data leakage represents a critical vulnerability class in SaaS systems. The issue often surfaces through broken row-level security (RLS) implementations, where architectural flaws cause isolation mechanisms to fail silently. One common manifestation occurs when query builders fail to properly group OR conditions within scoped contexts, allowing unintended rows to bypass tenant filters.
The problem lives in production code right now. It hides in queries that look correct at first glance. A global scope filters for tenant_id = 1. Then a developer appends .where(‘status’, ‘active’)->orWhere(‘role’, ‘admin’). The SQL AND operator has higher precedence than OR. Suddenly the scope…