CVE-2024-4863: Gutenberg Blocks by Kadence Blocks – Page Builder Features <= 3.2.38 - Authenticated (Contributor+) Stored Cross-Site Scripting via titleFont Parameter

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-14 · updated 2026-06-17
Weakness: CWE-79

Description

The Gutenberg Blocks with AI by Kadence WP – Page Builder Features plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘titleFont’ parameter in all versions up to, and including, 3.2.38 due to insufficient input sanitization and output escaping. 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

stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor: before 3.2.39 — fixed in 3.2.39

How to fix

Upgrade to a fixed version: stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor 3.2.39. Check the vendor advisory for mitigations.

References

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