WP Ultimate Post Grid <= 3.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via wpupg-text Shortcode

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2024-4043
CVSS 6.4 (Medium)
Publicly Published May 22, 2024
Last Updated May 23, 2024
Researcher Krzysztof Zając - CERT PL

Description

The WP Ultimate Post Grid plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wpupg-text' shortcode in all versions up to, and including, 3.9.1 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.

Wordfence blocked 20,236,048 attacks targeting this vulnerability in the past 24 hours.

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Vulnerability Details for WP Ultimate Post Grid

Software Type Plugin
Software Slug wp-ultimate-post-grid (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.9.2, or a newer patched version
Affected Version
  • <= 3.9.1
Patched Version
  • 3.9.2

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