What the vulnerability does
01Description
The Inquiry Form to Posts or Pages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Form Header' field in versions up to and including 1.0. This is due to insufficient input sanitization when saving via update_option() and lack of output escaping when displaying the stored value. The vulnerability exists in two locations: (1) the plugin settings page at inq_form.php line 180 where the value is echoed into an HTML attribute without esc_attr(), and (2) the front-end shortcode output at inquery_form_to_posts_or_pages.php line 139 where the value is output in HTML content without esc_html(). This makes it possible for authenticated attackers with administrator-level access to inject arbitrary web scripts that will execute whenever a user accesses the plugin settings page or views a page containing the [inquiry_form] shortcode.
Explanation of Vulnerability in Simple Terms
02Summary
The Inquiry form to posts or pages plugin contains a cross-site scripting (XSS) vulnerability in versions up to 1.0. An authenticated administrator with high privileges can inject malicious scripts that affect other users or the site scope. The vulnerability requires high attack complexity and does not require user interaction from the victim. Low confidentiality and integrity impact are possible.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers or affect site functionality.
Potential impact on your site
04Site Impact
An admin account could be compromised to inject scripts affecting other users or site behavior.
Conditions required to exploit
05Prerequisites
Attacker must have high-level administrator privileges and network access to the site.
Key dates
06Disclosure timeline
April 8, 2026
CVE published
April 13, 2026
Record updated
