Medium severity6.4NVD Advisory· Published Jun 1, 2024· Updated Apr 8, 2026

CVE-2024-3565

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Vanderwijk/Content Blocks
cpe:2.3:a:vanderwijk:content_blocks:*:*:*:*:*:wordpress:*:*
Range: <3.3.1
WordPress/Custom Post Widgetllm-fuzzy
Range: <=3.3.0
Package: https://wordpress.org/plugins/custom-post-widget

Patches

Vulnerability mechanics

References

plugins.trac.wordpress.org/changesetnvdPatch
www.wordfence.com/threat-intel/vulnerabilities/id/16d8eab2-953a-46bf-a0f6-296bcea86305nvdThird Party Advisory
plugins.trac.wordpress.org/browser/custom-post-widget/trunk/shortcode.phpnvdProduct

News mentions

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cvss	0.416
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