Fluent Forms <= 6.2.14 - Authenticated (Fluent Forms Manager+) Stored Cross-Site Scripting via Payment Item 'price_label' and Payment Summary 'cart_empty_text' Settings
- ID
- WPSEC-2026-0005
- Plugin
- Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder (fluentform)
- Affected
- all versions before 6.2.15
- Remediation
- Update to 6.2.15 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin High · Affected versions High among sites WPSec scans, 2026-10-22
- Attack surface
- Fluent Forms on WPSec AttackSurface
- Fix released
- Published
Description
The Fluent Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Payment Item field's 'price_label' setting and the Payment Summary field's 'cart_empty_text' setting in all versions up to, and including, 6.2.14 due to insufficient input sanitization (the form-save sanitizer skipped these keys for users without the unfiltered_html capability) and missing output escaping (the single-price Payment Item label is printed raw on the form, and the conversational-form payment summary inserts the empty-cart text as HTML). This makes it possible for authenticated attackers, with Fluent Forms form-management access granted by an administrator and without the unfiltered_html capability, to inject arbitrary web scripts in forms that will execute whenever a user accesses a page displaying the form. Exploitation requires the Fluent Forms payment module to be enabled.
References
- https://wpsec.com/vuln/WPSEC-2026-0005/
- https://plugins.svn.wordpress.org/fluentform/tags/6.2.15/
- https://wordpress.org/plugins/fluentform/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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