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Threat Entry Updated 2026-06-17

Stackable Ultimate Gutenberg Blocks - Cross-Site Scripting (XSS) (CVE-2024-6296)

The Stackable – Page Builder Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘data-caption’ parameter in all versions up to, and including, 3.13.1 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.

PLUGIN Stackable Ultimate Gutenberg Blocks

CVE-2024-6296

MEDIUM CVSS 6.4 2024-06-28
Threat Entry Updated 2026-06-17

Stackable Ultimate Gutenberg Blocks - Cross-Site Scripting (XSS) (CVE-2024-2039)

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.

PLUGIN Stackable Ultimate Gutenberg Blocks

CVE-2024-2039

MEDIUM CVSS 6.4 2024-04-09