CVE-2026-18146
HighCVSS 7.2Exploitation Probability (EPSS)
Low risk29th percentile - higher than 29% of all known CVEs
Summary
The Fluent Forms plugin for WordPress (versions up to 6.2.11) is vulnerable to Stored Cross-Site Scripting via Notification Smartcode Values. Unauthenticated attackers can inject arbitrary web scripts that execute in the browser of an administrator when viewing submission logs. Exploitation requires configured email notifications with attacker-influenced Smartcode values.
Risk Assessment
Risk includes administrator session hijacking or unauthorized actions in the WordPress admin panel, potentially leading to full site compromise.
Recommendation
Upgrade the Fluent Forms plugin to a version newer than 6.2.11 and review email notification configurations.
Original NVD description (English source)
The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Notification Smartcode Values in all versions up to, and including, 6.2.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in the browser of an administrator (or any user with the Fluent Forms entry-viewing capability) when they view the form's entry Submission Logs in the WordPress admin dashboard. Exploitation requires that a site administrator or Fluent Forms manager has configured an email notification whose subject or static (direct) Send To value references an attacker-influenced Smartcode such as an input_password field value, a cookie value, or submission.response.