What the vulnerability does
01Description
The SurveyJS plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.5.3 via survey result submissions. This is due to insufficient input sanitization and output escaping. The public survey page exposes the nonce required for submission, allowing unauthenticated attackers to submit HTML-encoded payloads that are decoded and rendered as executable HTML when an administrator views survey results, leading to stored XSS in the admin context.
Explanation of Vulnerability in Simple Terms
02Summary
SurveyJS Drag & Drop Form Builder versions 2.5.3 and earlier contain a cross-site scripting (XSS) vulnerability that allows unauthenticated attackers to inject malicious scripts into form data. The vulnerability affects the form builder's input handling and can impact all site visitors who interact with affected forms. No user interaction is required for the attack to succeed.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in visitors' browsers when they view or interact with affected forms.
Potential impact on your site
04Site Impact
Visitors' browsers can execute attacker-controlled scripts, potentially stealing session tokens, credentials, or redirecting users to malicious sites.
Conditions required to exploit
05Prerequisites
Network access to the form builder; no authentication or user interaction required.
Key dates
06Disclosure timeline
March 21, 2026
CVE published
April 8, 2026
Record updated
