The sender plugin before 1.2.1 for WordPress has multiple XSS issues.

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.

• Sender by BestWebSoft < 1.2.1 - Cross-Site Scripting http/cves/2017/CVE-2017-18564.yaml

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