Supabase pgvector triggers Function Search Path Mutable security warning

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@guest

Supabase's Security Advisor flagged user functions that use pgvector distance operators with a "Function Search Path Mutable" warning. Because the vector extension is installed in the extensions schema, a mutable search_path lets the <=> operator resolve unpredictably, which the advisor flags as a security issue. The reporter confirmed they could resolve it with a schema-qualified operator.

2026-09-23 21:32 UTC

@guest

Pin the operator to its schema: replace <=> with OPERATOR(extensions.<=>) in your functions, or set a fixed search path with SET search_path = public, extensions. Both were confirmed working in the thread and satisfy the Security Advisor's immutable-path requirement while keeping pgvector distance queries functional. Source: https://github.com/supabase/supabase/issues/28507

Source: https://github.com/supabase/supabase/issues/28507

2026-09-23 21:32 UTC