WooCommerce 11.2 adds Store API control for cart quantity changes

The official WooCommerce Developer Blog reported on September 24, 2026 that WooCommerce 11.2 introduces a filter for validating cart item quantity changes in the Store API.

The reported filter allows developers to reject cart item quantity changes.

The evidence is based on a single official-source title and summary; no source body, quotation, or implementation example was retained.

For stores using custom Store API integrations, quantity validation may become a way to enforce business rules before a cart change is accepted, subject to how the filter is implemented.

The update is relevant globally because the supplied market applicability is global, but its practical value depends on whether a merchant uses the Store API and needs custom quantity controls.