CVE-2024-3558

The Custom Field Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the the 'cfs[post_title]' 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.

• CWE-79
• CWE-79

• https://core.trac.wordpress.org/ticket/56655Issue Tracking
• https://en-gb.wordpress.org/plugins/custom-field-suite/Product
• https://github.com/WordPress/WordPress/blob/22d95abc55824e83904dc0fef290464b6bec7708/wp-admin/includes/template.php#L1384Product
• https://github.com/mgibbs189/custom-field-suite/blob/963dfcede18ff4ad697498556d9058db07d74fa3/includes/api.php#L282Product
• https://github.com/mgibbs189/custom-field-suite/blob/963dfcede18ff4ad697498556d9058db07d74fa3/includes/field_group.php#L20Product
• https://github.com/mgibbs189/custom-field-suite/blob/963dfcede18ff4ad697498556d9058db07d74fa3/includes/form.php#L64Product
• https://mgibbs189.github.io/custom-field-suite/Exploit
• https://www.wordfence.com/threat-intel/vulnerabilities/id/8e4dc6fd-4bd5-4ed1-ade0-cf2f8831fac3?source=cveThird Party Advisory
• https://core.trac.wordpress.org/ticket/56655Issue Tracking
• https://en-gb.wordpress.org/plugins/custom-field-suite/Product
• https://github.com/WordPress/WordPress/blob/22d95abc55824e83904dc0fef290464b6bec7708/wp-admin/includes/template.php#L1384Product
• https://github.com/mgibbs189/custom-field-suite/blob/963dfcede18ff4ad697498556d9058db07d74fa3/includes/api.php#L282Product
• https://github.com/mgibbs189/custom-field-suite/blob/963dfcede18ff4ad697498556d9058db07d74fa3/includes/field_group.php#L20Product
• https://github.com/mgibbs189/custom-field-suite/blob/963dfcede18ff4ad697498556d9058db07d74fa3/includes/form.php#L64Product
• https://mgibbs189.github.io/custom-field-suite/Exploit
• https://www.wordfence.com/threat-intel/vulnerabilities/id/8e4dc6fd-4bd5-4ed1-ade0-cf2f8831fac3?source=cveThird Party Advisory

Published

Jun 20, 2024

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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