The Ninja Forms WordPress plugin before 3.14.10 does not prevent user-supplied query-string input, used to pre-populate a form field's default value, from being processed as a shortcode, allowing unauthenticated attackers to execute arbitrary shortcodes registered on the site when a form so configured is embedded on a public page.

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to generic SQL Injection via Import File 'settings' Key in all versions up to, and including, 3.14.9 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The vulnerable keys originate from the 'settings' object in an attacker-controlled import file processed via filegetcontents() or base64-decoded/JSON-decoded blobs, bypassing wpmagicquotes protections entirely; two distinct sinks are affected — savesetting() in Model.php and insertformmeta() in ImportForm.php — as only the value side is escaped while the key side receives no sanitization or parameterization at any point in the call chain.

Ninja Forms WordPress plugin version 3.14.8 and prior contains an improper input validation vulnerability that allows unauthenticated attackers to inject arbitrary numeric values into form calculations and payment totals by submitting values that do not match any configured option in ListSelect or ListRadio fields. Attackers can tamper with form submission payloads to the ajax submit endpoint, causing the getcalcvalue() method to fail open and return attacker-controlled values, enabling manipulation of payment amounts to zero or arbitrary figures and bypassing admin-configured pricing logic.

Ninja Forms WordPress plugin version 3.14.8 contains a client-side enforcement of server-side security vulnerability that allows unauthenticated attackers to bypass all form validation by merging attacker-controlled field metadata over server-loaded form definitions before validation runs. Attackers can craft a malicious AJAX submission overriding field types, removing required flags, and disabling CAPTCHA checks through the nopriv AJAX endpoint to trigger form actions such as email notifications and database storage with unverified, attacker-controlled content.

Ninja Forms WordPress plugin version 3.14.8 and prior contains a missing authorization vulnerability in the render callback of the ninja-forms/submissions-table Gutenberg block that allows authenticated attackers with Author-level privileges to expose stored form submissions to unauthenticated visitors by embedding the block with an arbitrary formID on a published post. Attackers can retrieve the signed bearer token injected into every page visitor's browser via wplocalizescript and use it against the REST API submissions endpoint to access all saved form submission field values, including sensitive personally identifiable information such as names, email addresses, and phone numbers.

Ninja Forms plugin version 3.14.8 and prior for WordPress Multisite contains an incorrect authorization vulnerability that allows a subsite Administrator to trigger network-wide deletion of all Ninja Forms data by exploiting a site-scoped capability check combined with unsafe multisite migration defaults. Attackers can send a crafted POST request to the admin-ajax.php endpoint with the nfdeletealldata action and a per-site nonce to invoke migration routines that unconditionally iterate all blogs via switchtoblog(), dropping all nf3 tables and clearing options and transients across every subsite in the network without requiring super-admin or network-admin privileges.

The Ninja Forms - Excel Export plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.3.6. This is due to the savefilter() AJAX handler storing the raw $POST['filter'] array into a WordPress option via updateoption() without any capability check, nonce verification, or input sanitization, combined with the getfilterrow() method on the admin Excel Export screen concatenating the stored filter values (fieldkey, condition, value) directly into HTML attributes without escattr(). This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Ninja Forms - Excel Export plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.3.6 via the 'spreadsheetexportformid' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to enumerate any Ninja Forms form ID and download all stored submission data — including names, email addresses, phone numbers, physical addresses, and any other PII collected by site forms — as a downloadable XLSX file.

The Ninja Forms - File Uploads plugin for WordPress is vulnerable to Arbitrary File Read via the attachfiles() function in versions up to, and including, 3.3.29. This is due to the getfilesforattachment() function accepting a raw attacker-controlled 'files' array when the process() method returns early due to a client-supplied saveProgress flag, bypassing all upload validation, path normalization, and database record creation steps, and allowing an attacker-supplied filepath value to reach wpmail() as an email attachment with only a fileexists() check. This makes it possible for unauthenticated attackers to read arbitrary files on the affected site's server.

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to unauthorized access of data due to a missing authorization check on the 'ninja-forms-views/token/refresh' REST callback in all versions up to, and including, 3.14.1. This makes it possible for unauthenticated attackers to view form submissions, which could potentially contain sensitive information.

The GSheetConnector For Ninja Forms plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'njform-google-sheet-config ' page in all versions up to, and including, 2.0.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to retrieve information about the system.

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.12.0. This is due to missing or incorrect nonce validation when exporting CSV files. This makes it possible for unauthenticated attackers to delete those files granted they can trick an administrator into performing an action such as clicking on a link.

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.12.0. This is due to missing or incorrect nonce validation on the maybeoptin() function. This makes it possible for unauthenticated attackers to opt an affected site into usage statistics collection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

The Ninja Forms WordPress plugin before 3.11.1 unserializes user input via form field, which could allow Unauthenticated users to perform PHP Object Injection when a suitable gadget is present on the blog.

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the use of a templating engine in all versions up to, and including, 3.10.2.1 due to insufficient output escaping on user data passed through the template. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Ninja Forms WordPress plugin before 3.10.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The Ninja Forms WordPress plugin before 3.10.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The Ninja Forms WordPress plugin before 3.10.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The Ninja Forms Webhooks plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 3.0.7 via the form webhook functionality. This makes it possible for authenticated attackers, with Administrator-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode in all versions up to, and including, 3.8.24 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.8.22. This is due to the software allowing users to execute an action that does not properly validate a value before running doshortcode. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes.

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the calculations parameter in all versions up to, and including, 3.8.19 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 Styler for Ninja Forms plugin for WordPress is vulnerable to unauthorized modification of data that can lead to a denial of service due to a missing capability check on the deactivatelicense function in all versions up to, and including, 3.3.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary option values on the WordPress site. This can be leveraged to delete an option that would create an error on the site and deny service to legitimate users. Note: This issue can also be used to add arbitrary options with an empty value.

Cross-site request forgery (CSRF) vulnerability exists in Ninja Forms prior to 3.4.31. If a website administrator views a malicious page while logging in, unintended operations may be performed.

Ninja Forms prior to 3.8.1 contains a cross-site scripting vulnerability in submit processing. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the user who is accessing to the website using the product.

Ninja Forms prior to 3.8.1 contains a cross-site scripting vulnerability in custom fields for labels. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the user who is accessing to the website using the product.

The Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via an image title embedded into a form in all versions up to, and including, 3.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.8.0. This is due to missing or incorrect nonce validation on the nfdownloadallsubs AJAX action. This makes it possible for unauthenticated attackers to trigger an export of a form's submission to a publicly accessible location via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.