The Qards plugin through 2017-10-11 for WordPress has XSS via a remote document specified in the url parameter to html2canvasproxy.php.

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 Qards - Cross-Site Scripting http/cves/2017/CVE-2017-18598.yaml

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