AddFunc Head & Footer Code <= 2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Fields

Wordfence Intelligence   >   Vulnerability Database   >   AddFunc Head & Footer Code <= 2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Fields
6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2026-2305
CVSS 6.4 (Medium)
Publicly Published April 9, 2026
Last Updated April 10, 2026
Researcher Muhammad Yudha - DJ

Description

The AddFunc Head & Footer Code plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `aFhfc_head_code`, `aFhfc_body_code`, and `aFhfc_footer_code` post meta values in all versions up to, and including, 2.3. This is due to the plugin outputting these meta values without any sanitization or escaping. While the plugin restricts its own metabox and save handler to administrators via `current_user_can('manage_options')`, it does not use `register_meta()` with an `auth_callback` to protect these meta keys. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts via the WordPress Custom Fields interface that execute when an administrator previews or views the post.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

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Vulnerability Details for AddFunc Head & Footer Code

AddFunc Head & Footer Code

Software Type Plugin
Software Slug addfunc-head-footer-code (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.4, or a newer patched version
Affected Version
  • <= 2.3
Patched Version
  • 2.4

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