What the vulnerability does
01Description
The XX2WP Integration Tools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'mxp_fb2wp_display_embed' shortcode in all versions up to, and including, 1.9.9. This is due to the plugin not properly sanitizing user input and output of the 'post_id' parameter. 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.
Explanation of Vulnerability in Simple Terms
02Summary
XX2WP Integration Tools versions 1.9.9 and earlier contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts affecting other users and site functionality. The vulnerability requires low-level authentication but can impact the entire site scope. Site administrators should update to a version newer than 1.9.9 to remediate this issue.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers and affect site functionality.
Potential impact on your site
04Site Impact
Authenticated users can inject scripts affecting other users and site operations; update required.
Conditions required to exploit
05Prerequisites
Attacker must have a low-level authenticated account on the site.
Key dates
06Disclosure timeline
October 18, 2025
CVE published
April 8, 2026
Record updated
