Same-origin guard

A security mechanism used to prevent unauthorized cross-origin mutations by ensuring that requests originate from the same origin as the application.

Implementation

  • Utilizes the requireSameOriginForMutatingRequest() function.
  • Applied to all Admin API endpoints to restrict mutation-based requests.
  • Identified as a critical security constraint in 2026 04 14 New Claude Plan during the implementation of new administrative features.

2026 04 14 New Claude Plan

Source Notes