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nolimit-discounts/includes
kristianwindandClaude Opus 5.5 d5d85612bd
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1.7.1: security fixes for the checkout and the client IP
- The discount follows the billing email, the address the order is
  placed under. The tracked session email used to win, so a guest could
  post a discounted address to the tracking endpoint and check out under
  their own, keeping the discount.
- Shipping packages carry the matched assignment, so WooCommerce's
  per-package rate cache no longer reuses rates filtered for a matched
  address (free shipping, reserved methods) after the email changes.
- The anonymous tracking endpoint no longer answers matched: true|false,
  which let anyone enumerate discounted addresses and domains.
- CF-Connecting-IP is believed only from a Cloudflare edge range or a
  private/loopback proxy. From anyone else it let a direct client pick a
  new address per request: no REST rate limit, forged audit-log IPs.

Smoke tests: 89 assertions (was 73), each fix with its own.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-11-14 15:11:28 +01:00
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