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CVE-2024-12268: Responsive Blocks – WordPress Gutenberg Blocks <= 1.9.7 - Authenticated (Contributor+) Stored Cross-Site Scripting

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-12-24 · 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 'responsive-block-editor-addons/portfolio' block in all versions up to, and including, 1.9.7 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 1.9.8 — fixed in 1.9.8

How to fix

Upgrade to a fixed version: CyberChimps Responsive Blocks 1.9.8. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3208350/responsive-block-editor-addons/tags/1.9.8/src/blocks/portfolio/index.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/0e951b97-3d17-4360-8fec-393e2f0c13d2?source=cve

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