PT-2024-19482 · WordPress · The Essential Blocks – Page Builder Gutenberg Blocks

Wesley · Published 2024-03-19 · Updated 2025-01-27 · CVE-2024-2255

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress versions up to, and including, 4.5.2

Description The issue is related to Stored Cross-Site Scripting via the plugin's widgets due to insufficient input sanitization and output escaping on user-supplied attributes such as listStyle. This allows 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.

Recommendations For versions up to, and including, 4.5.2, update to a version higher than 4.5.2 to resolve the issue. As a temporary workaround, consider restricting access to the plugin's widgets for users with contributor-level and above permissions until a patch is available. Avoid using the listStyle attribute in the affected plugin's widgets until the issue is resolved.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-2255

Affected Products

The Essential Blocks – Page Builder Gutenberg Blocks

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2024-2255 · Security Note
• https://osv.dev/vulnerability/CVE-2024-2255 · Vendor Advisory
• https://plugins.trac.wordpress.org/changeset/3053199/essential-blocks/trunk/blocks/TableOfContents.php · Patch
• https://twitter.com/CVEnew/status/1770293711269953811 · Twitter Post
• https://plugins.trac.wordpress.org/browser/essential-blocks/tags/4.5.2/blocks/TableOfContents.php#L120 · Note
• https://t.me/cvenotify/108677 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/cfcd59ae-085f-47d2-a4d2-2d1239f035d2?source=cve · Note