WPForms Lite < 1.9.5.1 - Contributor+ Stored XSS via 'start_timestamp' Parameter

Description

The plugin is vulnerable to Stored Cross-Site Scripting via the start_timestamp parameter 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.