What the vulnerability does
01Description
The WPForms Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Single Line Text and Paragraph Text Field Values in all versions up to, and including, 2.0.0.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit relies on the plugin's own wp_kses_allowed_html filter widening the 'post' allowlist to permit iframe elements with a data-src attribute, which is not on WordPress's URI-attribute sanitization list, allowing a javascript: URI stored in data-src to survive kses processing and subsequently be promoted to a live src attribute by the bundled admin script view-entry.min.js.
Explanation of Vulnerability in Simple Terms
02Summary
WPForms Pro versions up to 2.0.0.2 contain a cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts into the site without user interaction. The vulnerability affects the scope beyond the vulnerable component, potentially impacting other parts of the application. Site administrators should update to a version newer than 2.0.0.2 immediately.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that executes in visitors' browsers and affects other site functionality.
Potential impact on your site
04Site Impact
Visitors' browsers could execute attacker-controlled scripts, potentially stealing data or redirecting users.
Conditions required to exploit
05Prerequisites
No authentication or user interaction required; attacker needs only network access to the site.
Key dates
06Disclosure timeline
August 21, 2026
CVE published
