Authenticated (Admin+) Stored Cross-Site Scripting in Ninja Forms Field Settings

Ninja Forms before 3.10.1 does not sanitise or escape several form-field settings before storing them, so an administrator can inject arbitrary JavaScript even when the unfiltered_html capability is disallowed. On multisite installations this lets a site administrator run script in the browser of any user who views or edits the affected form, including network super administrators.

This vulnerability affects the following application versions:

• Ninja Forms – The Contact Form Builder 3.7.3
• Ninja Forms – The Contact Form Builder 3.7.3.1
• Ninja Forms – The Contact Form Builder 3.8.0
• Ninja Forms – The Contact Form Builder 3.8.1
• Ninja Forms – The Contact Form Builder 3.8.2
• Ninja Forms – The Contact Form Builder 3.8.3
• Ninja Forms – The Contact Form Builder 3.8.4
• Ninja Forms – The Contact Form Builder 3.8.5
• Ninja Forms – The Contact Form Builder 3.8.6
• Ninja Forms – The Contact Form Builder 3.8.7
• Ninja Forms – The Contact Form Builder 3.8.8
• Ninja Forms – The Contact Form Builder 3.8.9
• Ninja Forms – The Contact Form Builder 3.8.10
• Ninja Forms – The Contact Form Builder 3.8.11
• Ninja Forms – The Contact Form Builder 3.8.12
• Ninja Forms – The Contact Form Builder 3.8.13
• Ninja Forms – The Contact Form Builder 3.8.14
• Ninja Forms – The Contact Form Builder 3.8.15
• Ninja Forms – The Contact Form Builder 3.8.16
• Ninja Forms – The Contact Form Builder 3.8.17
• Ninja Forms – The Contact Form Builder 3.8.18
• Ninja Forms – The Contact Form Builder 3.8.19
• Ninja Forms – The Contact Form Builder 3.8.20
• Ninja Forms – The Contact Form Builder 3.8.21
• Ninja Forms – The Contact Form Builder 3.8.22
• Ninja Forms – The Contact Form Builder 3.8.23
• Ninja Forms – The Contact Form Builder 3.8.24
• Ninja Forms – The Contact Form Builder 3.8.25
• Ninja Forms – The Contact Form Builder 3.8.25.1
• Ninja Forms – The Contact Form Builder 3.9.0
• Ninja Forms – The Contact Form Builder 3.9.1
• Ninja Forms – The Contact Form Builder 3.9.2
• Ninja Forms – The Contact Form Builder 3.9.2.1
• Ninja Forms – The Contact Form Builder 3.10.0