Pagelayer <= 2.0.9 - Incorrect Authorization to Authenticated (Contributor+) Mail Relay Configuration via 'contacts'

Summary

The Page Builder: Pagelayer – Drag and Drop website builder plugin for WordPress is vulnerable to Incorrect Authorization in all versions up to, and including, 2.0.9. This is due to the pagelayer_save_content AJAX handler allowing users with basic post-edit capability to persist pagelayer_contact_templates metadata on posts they can edit (including pending posts), while the unauthenticated pagelayer_contact_submit endpoint later consumes that metadata by user-controlled post/form identifiers without enforcing a privileged or published-context boundary. This makes it possible for authenticated attackers, with Contributor-level access and above, to configure arbitrary contact-form mail templates that are usable through unauthenticated form submission via the contacts parameter. In typical deployments this template feature is configured via Pagelayer Pro UI; however, the vulnerable backend trust path is still present. This issue may be chained with CVE-2026-2442 to increase exploitability and attacker control over outbound email behavior.