WCS QR Code Generator <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
EntreBase Advisory: The WCS QR Code Generator plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Read more about this vulnerability: https://www.wordfence.com/threat-intel/vulnerabilities/id/9aa98012-1c0c-402d-9e4f-89b2d45f71e1?source=api-prod