Stored Cross-Site Scripting in SlingBlocks Plugin by FunnelKit

CVE-2025-8607

What is CVE-2025-8607?

The SlingBlocks – Gutenberg Blocks by FunnelKit plugin for WordPress is susceptible to Stored Cross-Site Scripting vulnerabilities due to inadequate sanitization and escaping of user-supplied attributes in the Countdown block. This flaw allows authenticated users with contributor-level access and higher to inject malicious scripts that execute on affected pages, compromising security for all users accessing those pages. Prompt updates and mitigation strategies are essential to safeguard against potential exploits.

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