PT-2024-33262 · WordPress · The Essential Blocks – Page Builder Gutenberg Blocks

João Pedro Soares De Alcântara · Published 2024-05-17 · Updated 2025-01-30 · CVE-2024-4891

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, 4.5.12

Description The issue is related to Stored Cross-Site Scripting via the tagName parameter due to insufficient input sanitization and output escaping. This allows authenticated attackers with contributor-level permissions and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Recommendations For versions up to, and including, 4.5.12, update to a version higher than 4.5.12 to resolve the issue. As a temporary workaround, consider restricting access to the tagName parameter to minimize the risk of exploitation. Additionally, restrict contributor-level permissions to prevent unauthorized access.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-4891

Affected Products

The Essential Blocks – Page Builder Gutenberg Blocks

References · 10

• https://plugins.trac.wordpress.org/changeset/3087677 · Patch
• https://osv.dev/vulnerability/CVE-2024-4891 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-4891 · Security Note
• https://t.me/cvenotify/109183 · Telegram Post
• https://twitter.com/CVEnew/status/1791925427482624408 · Twitter Post
• https://twitter.com/linuxpatch/status/1791711899651867067 · Twitter Post
• https://plugins.trac.wordpress.org/browser/essential-blocks/trunk/blocks/AdvancedHeading.php#L115 · Note
• https://twitter.com/VulmonFeeds/status/1791781377802666319 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/e1bcebb3-920b-40cc-aa5c-24a1f729b28d?source=cve · Note
• https://t.me/cvenotify/80344 · Telegram Post