CVE-2025-8607: SlingBlocks – Gutenberg Blocks by FunnelKit (Formerly WooFunnels) <= 1.6.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
The SlingBlocks – Gutenberg Blocks by FunnelKit (Formerly WooFunnels) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's Countdown block's attributes in all versions up to, and including, 1.6.0 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-8607?
CVE-2025-8607 has been classified as a medium severity vulnerability due to its potential for stored cross-site scripting attacks.
How do I fix CVE-2025-8607?
To fix CVE-2025-8607, update the FunnelKit SlingBlocks – Gutenberg Blocks plugin to version 1.6.1 or later, which addresses the vulnerability.
Who is affected by CVE-2025-8607?
CVE-2025-8607 affects all versions of the FunnelKit SlingBlocks – Gutenberg Blocks plugin for WordPress up to and including version 1.6.0.
What kind of attack can result from CVE-2025-8607?
CVE-2025-8607 can lead to stored cross-site scripting attacks, allowing an attacker to inject malicious scripts into the application.
Is user data at risk due to CVE-2025-8607?
Yes, user data may be at risk with CVE-2025-8607, as the vulnerability can potentially expose user interactions to unauthorized scripts.