Stackable – Page Builder Gutenberg Blocks <= 3.12.11 - Authenticated(Contributor+) Stored Cross-Site Scripting via Posts Block

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2024-2039
CVSS 6.4 (Medium)
Publicly Published March 28, 2024
Last Updated July 31, 2024
Researchers Ngô Thiên An (ancorn_)
Dau Hoang Tai - VCI

Description

The Stackable – Page Builder Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Post(v2) block title tag in all versions up to, and including, 3.12.11 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

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Vulnerability Details for Stackable – Page Builder Gutenberg Blocks

Software Type Plugin
Software Slug stackable-ultimate-gutenberg-blocks (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.12.12, or a newer patched version
Affected Version
  • <= 3.12.11
Patched Version
  • 3.12.12

Recent vulnerabilities in Stackable – Page Builder Gutenberg Blocks

# Title CVE ID CVSS Researchers Date
1 Stackable <= 3.19.5 - Authenticated (Author+) Stored Cross-Site Scripting CVE-2025-47500 6.4 daroo January 7, 2026
2 Stackable <= 3.18.1 - Missing Authorization CVE-2025-60094 4.3 Abu Hurayra (HurayraIIT) September 26, 2025
3 Stackable <= 3.18.1 - Authenticated (Contributor+) Sensitive Information Exposure CVE-2025-60095 4.3 Abu Hurayra (HurayraIIT) September 26, 2025
4 Stackable – Page Builder Gutenberg Blocks <= 3.13.11 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2024-12117 6.4 zer0gh0st January 21, 2025
5 Stackable – Page Builder Gutenberg Blocks <= 3.13.6 - Unauthenticated CSS Injection CVE-2024-8760 5.3 Francesco Carlucci October 11, 2024
6 Stackable – Page Builder Gutenberg Blocks <= 3.13.1 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting CVE-2024-6296 6.4 Webbernaut June 27, 2024
7 Freemius SDK <= 2.5.9 - Reflected Cross-Site Scripting via fs_request_get CVE-2023-33999 6.1 Rafie Muhammad July 18, 2023
8 Freemius SDK <= 2.4.2 - Missing Authorization Checks CVE-2022-4974 6.3 March 4, 2022

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