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CVE-2024-13732: Responsive Blocks – WordPress Gutenberg Blocks <= 1.9.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via section_tag Parameter

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-01-30 · updated 2026-06-17
• Weakness: CWE-79

Description

The Responsive Blocks – WordPress Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘section_tag’ parameter in all versions up to, and including, 1.9.9 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

• CyberChimps Responsive Blocks: before 2.0.0 — fixed in 2.0.0

How to fix

Upgrade to a fixed version: CyberChimps Responsive Blocks 2.0.0. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/responsive-block-editor-addons/trunk/src/blocks/post-carousel/index.php#L643
• https://plugins.trac.wordpress.org/changeset/3231017/
• https://wordpress.org/plugins/responsive-block-editor-addons
• https://www.wordfence.com/threat-intel/vulnerabilities/id/1c0e5c85-72c3-4f09-aade-ec5a82b9cc41?source=cve

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