The "SagePay Server Gateway for WooCommerce" plugin before 1.0.9 for WordPress has XSS via the includes/pages/redirect.php page parameter.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

• WordPress SagePay Server Gateway for WooCommerce <1.0.9 - Cross-Site Scripting http/cves/2018/CVE-2018-5316.yaml

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.