CVE-2024-3565: Vanderwijk Content Blocks

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Content Blocks (Custom Post Widget) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'content_block' shortcode in all versions up to, and including, 3.3.0 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 products

• Vanderwijk Content Blocks: before 3.3.1 (fixed in 3.3.1)

Published 2024-06-01. Last modified 2026-06-17.