Medium severity6.4NVD Advisory· Published Jun 12, 2024· Updated Apr 8, 2026

CVE-2024-3559

Description

The Custom Field Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the the 'cfs[post_content]' parameter versions up to, and including, 2.6.7 due to insufficient input sanitization and output escaping. 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.

Affected products

Custom Field Suite Project/Custom Field Suite
cpe:2.3:a:custom_field_suite_project:custom_field_suite:*:*:*:*:*:wordpress:*:*
Range: <=2.6.7

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.wordfence.com/threat-intel/vulnerabilities/id/56d8af3b-6c00-49ed-872a-64f7bebb470bnvdThird Party Advisory
plugins.trac.wordpress.org/browser/custom-field-suite/trunk/includes/api.phpnvdProduct
plugins.trac.wordpress.org/browser/custom-field-suite/trunk/includes/form.phpnvdProduct

News mentions

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cvss	0.416
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000