What’s Vulnerable › Vulnerabilities

CVE-2024-4042: Post Grid, Form Maker, Popup Maker, WooCommerce Blocks, Post Blocks, Post Carousel - Combo Blocks <= 2.2.80 - Authenticated (Contributor+) Stored Cross-Site Scripting via Block Attribute

• 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: 2024-06-07 · updated 2026-06-17
• Weakness: CWE-79

Description

The Post Grid, Form Maker, Popup Maker, WooCommerce Blocks, Post Blocks, Post Carousel – Combo Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class' attribute of the menu-wrap-item block in all versions up to, and including, 2.2.80 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

• PickPlugins ComboBlocks: before 2.2.81 — fixed in 2.2.81

How to fix

Upgrade to a fixed version: PickPlugins ComboBlocks 2.2.81. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3084503/post-grid/tags/2.2.81/includes/blocks/menu-wrap-item/index.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/55e6eb58-79e2-4404-887a-0392ce7914aa?source=cve
• https://plugins.trac.wordpress.org/changeset/3084503/post-grid/tags/2.2.81/includes/blocks/menu-wrap-item/index.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/55e6eb58-79e2-4404-887a-0392ce7914aa?source=cve

Get alerted when CVE-2024-4042 or the next vulnerability affects your stack