WooCommerce Catalog Mode Can Expose Prices Through APIs and Structured Data

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Hiding prices in WooCommerce by removing visible HTML elements does not prevent exposure through other channels such as REST APIs, GraphQL endpoints, JSON-LD structured data, and product feed plugins. Variable products, for instance, often send full variation data including price fields directly to the browser, regardless of what is displayed on screen. Developers are advised to treat price hiding as a server-side data-access control problem rather than a CSS or JavaScript presentation issue. A comprehensive test matrix should cover single-product pages, cart and checkout flows, Store API responses, SEO plugin schema output, and third-party integrations. The recommended approach is to enforce audience-based access decisions on the server and sanitize price data before serialization, ensuring sensitive values are never transmitted to unauthorized clients.

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