CVE-2024-3565

Content Blocks (Custom Post Widget) <= 3.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via content_block Shortcode

Published Jun 1, 2024 CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Description
The Content Blocks (Custom Post Widget) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'content_block' shortcode in all versions up to, and including, 3.3.0 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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-32151 The Content Blocks (Custom Post Widget) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'content_block' shortcode in all versions up to, and including, 3.3.0 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.
History
Type Values Removed Values Added
First Time appeared Johan Van Der Wijk
Johan Van Der Wijk content Blocks Custom Post Widget
CPEs cpe:2.3:a:johan_van_der_wijk:content_blocks_custom_post_widget:*:*:*:*:*:*:*:*
Vendors & Products Johan Van Der Wijk
Johan Van Der Wijk content Blocks Custom Post Widget
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics epss

{'score': 0.00341}

epss

{'score': 0.00261}

Type Values Removed Values Added
First Time appeared Vanderwijk
Vanderwijk content Blocks
Weaknesses CWE-79
CPEs cpe:2.3:a:vanderwijk:content_blocks:*:*:*:*:*:wordpress:*:*
Vendors & Products Vanderwijk
Vanderwijk content Blocks
Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Apr 8, 2026, 4:37 PM
Reserved
Apr 10, 2024, 12:16 AM
Status
Modified
Published
Jun 1, 2024, 4:15 AM
Modified
Jun 17, 2026, 7:44 AM