CVE-2024-3565: Content Blocks (Custom Post Widget) <= 3.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via content_block Shortcode
First published: Sat Jun 01 2024(Updated: )
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.
Credit: security@wordfence.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| WordPress Content Blocks | <=3.3.0 | |
| Johan van der Wijk Content Blocks | <3.3.1 |
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Reference Links
- https://www.wordfence.com/threat-intel/vulnerabilities/id/16d8eab2-953a-46bf-a0f6-296bcea86305?source=cve
- https://plugins.trac.wordpress.org/browser/custom-post-widget/trunk/shortcode.php#L62
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3078739%40custom-post-widget&new=3078739%40custom-post-widget&sfp_email=&sfph_mail=#file6
Frequently Asked Questions
What is the severity of CVE-2024-3565?
CVE-2024-3565 is rated as a high severity vulnerability due to the potential for Stored Cross-Site Scripting.
How do I fix CVE-2024-3565?
To fix CVE-2024-3565, update the Content Blocks (Custom Post Widget) plugin to version 3.3.1 or later.
What versions of the Content Blocks plugin are affected by CVE-2024-3565?
CVE-2024-3565 affects all versions of the Content Blocks (Custom Post Widget) plugin up to and including version 3.3.0.
What type of vulnerability is CVE-2024-3565?
CVE-2024-3565 is a Stored Cross-Site Scripting vulnerability caused by insufficient input sanitization.
Who is the vendor for the affected software in CVE-2024-3565?
The vendor for the affected software in CVE-2024-3565 is Johan van der Wijk.
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