The subscriber plugin before 1.3.5 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.

• Subscriber by BestWebSoft < 1.3.5 - Cross-Site Scripting http/cves/2017/CVE-2017-18502.yaml

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