What’s Vulnerable › Vulnerabilities

CVE-2024-6346: Post Grid, Form Maker, Popup Maker, WooCommerce Blocks, Post Blocks, Post Carousel – Combo Blocks <= 2.2.85 - Authenticated (Contributor+) Stored Cross-Site Scripting via redirectURL Parameter of Date Countdown Widget

• 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: 2024-08-01 · updated 2026-06-17
• Weakness: CWE-79

Description

The Gutenberg Blocks, Page Builder – ComboBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the redirectURL parameter of the Date Countdown widget, in all versions up to, and including, 2.2.85 due to insufficient input sanitization and output escaping on user supplied attributes. 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 2.2.86 — fixed in 2.2.86

How to fix

Upgrade to a fixed version: PickPlugins ComboBlocks 2.2.86. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/post-grid/tags/2.2.84/includes/blocks/date-countdown/front-scripts.js#L117
• https://plugins.trac.wordpress.org/browser/post-grid/tags/2.2.84/includes/blocks/date-countdown/index.php#L283
• https://www.wordfence.com/threat-intel/vulnerabilities/id/1512d911-167f-4653-ab20-cb057b83dab1?source=cve

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