CVE-2024-4891: Wpdeveloper Essential Blocks

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘tagName’ parameter in versions up to, and including, 4.5.12 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• Wpdeveloper Essential Blocks: before 4.5.13 (fixed in 4.5.13)

Published 2024-05-18. Last modified 2026-06-17.