WordPress Ninja Forms plugin <= 3.15.3 - Cross Site Scripting (XSS) vulnerability

Unauthenticated Cross Site Scripting (XSS) in Ninja Forms <= 3.15.3 versions.

Ninja Forms 3.15.3 - Unauthenticated Stored XSS via Paragraph Text Field in Submissions Admin

The Ninja Forms WordPress plugin 3.15.3 does not escape submitted form field values before outputting them on the submission edit screen in the admin area, which could allow unauthenticated users to submit values through a public form that then execute in the browser of any high-privileged user who reviews the submission.

Ninja Forms 3.15.3 - Unauthenticated PHP Object Injection via CSV Export

The Ninja Forms WordPress plugin 3.15.3 does not prevent user-submitted form field values from being deserialised when an administrator later exports form submissions to CSV, allowing unauthenticated attackers to perform PHP Object Injection; if a suitable POP chain is present via another installed plugin or theme, this can lead to actions such as arbitrary file operations or remote code execution.

Ninja Forms 3.14.10 - 3.15.1 - Unauthenticated Arbitrary Shortcode Execution via IP and Referer Merge Tags

The Ninja Forms WordPress plugin from 3.14.10 before 3.15.2 does not prevent shortcodes in request-derived values from being executed when it substitutes them into content it later processes for shortcodes, allowing unauthenticated users to run any shortcode registered on the site.

Ninja Forms 3.14.0 - 3.15.1 - Authenticated Arbitrary Post Modification and Sensitive Information Disclosure via Abilities REST API

The Ninja Forms WordPress plugin before 3.15.2 does not restrict its REST abilities to administrators, accepting a Ninja Forms WordPress plugin before 3.15.2-specific capability as equivalent to full site administration, which allows any user granted that capability to read Ninja Forms WordPress plugin before 3.15.2 settings and stored form submissions, overwrite the Ninja Forms WordPress plugin before 3.15.2's configuration, and create or modify arbitrary posts and pages. The capability belongs to no default WordPress role and the Ninja Forms WordPress plugin before 3.15.2 never grants it, so an administrator must have assigned it, typically when delegating access to the form builder.

Path Traversal and Unrestricted File Upload exists in the Ninja Forms plugin before 3.0.23 for WordPress (when the Uploads add-on is activated). This allows an attacker to traverse the file system to access files and execute code via the includes/fields/upload.php (aka upload/submit page) name and tmp_name parameters.

Ninja Forms < 3.14.10 - Unauthenticated Arbitrary Shortcode Execution via Query-String Populated Field Default

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.

WordPress Ninja Forms File Uploads Extension plugin <= 3.3.26 - Cross Site Request Forgery (CSRF) vulnerability

Unauthenticated Cross Site Request Forgery (CSRF) in Ninja Forms File Uploads Extension <= 3.3.26 versions.

Ninja Forms Missing Authorization in submissions-table Gutenberg Block Discloses Form Submissions to Unauthenticated Visitors

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 `wp_localize_script` 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 Server-Side Validation Bypass via Client-Controlled Field Metadata Merge in AJAX Submission Handler

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 Calculation and Payment Total Tampering via Fail-Open get_calc_value in ListSelect and ListRadio Fields

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 get_calc_value() 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 Cross-Site Network-Wide Data Deletion on WordPress Multisite via nf_delete_all_data AJAX Action

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 nf_delete_all_data action and a per-site nonce to invoke migration routines that unconditionally iterate all blogs via switch_to_blog(), dropping all nf3_* tables and clearing options and transients across every subsite in the network without requiring super-admin or network-admin privileges.

Ninja Forms Unauthenticated Stored Cross-Site Scripting via Repeatable Fieldset Submission Index

Ninja Forms plugin for WordPress versions 3.10.4 through 3.14.9 contains an unauthenticated stored cross-site scripting vulnerability in the Repeatable Fieldset feature where parseSubmissionIndex() accepts arbitrary strings as submission indexes without numeric validation, and admin_form_element() interpolates the index directly into HTML without escaping. An unauthenticated attacker can submit a public form with a crafted repeater child key containing malicious script payloads, which execute in an administrator's browser when viewing submissions in the WordPress admin panel, enabling session-cookie theft, creation of administrator accounts, installation of malicious plugins, and arbitrary modification of site content.

WordPress Ninja Forms plugin <= 3.8.4 - Subscriber+ Arbitrary Shortcode Execution vulnerability

Improper Control of Generation of Code ('Code Injection') vulnerability in Saturday Drive Ninja Forms allows Code Injection.This issue affects Ninja Forms: from n/a through 3.8.4.

WordPress Ninja Forms plugin <= 3.6.25 - Subscriber+ Broken Access Control vulnerability

Missing Authorization vulnerability in Saturday Drive Ninja Forms.This issue affects Ninja Forms: from n/a through 3.6.25.

WordPress Ninja Forms Plugin <= 3.6.24 is vulnerable to Arbitrary File Deletion

Improper Input Validation vulnerability in Saturday Drive Ninja Forms Contact Form.This issue affects Ninja Forms Contact Form : from n/a through 3.6.24.

WordPress Ninja Forms Plugin <= 3.6.25 is vulnerable to Denial of Service Attack

Uncontrolled Resource Consumption vulnerability in Saturday Drive Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress leading to DoS.This issue affects Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress: from n/a through 3.6.25.

WordPress Ninja Forms – The Contact Form Builder That Grows With You plugin <= 3.8.16 - Cross Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kevin Stover Ninja Forms ninja-forms allows Stored XSS.This issue affects Ninja Forms: from n/a through <= 3.8.16.

WordPress Ninja Forms – The Contact Form Builder That Grows With You plugin <= 3.8.16 - Cross Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kevin Stover Ninja Forms ninja-forms allows Stored XSS.This issue affects Ninja Forms: from n/a through <= 3.8.16.

Ninja Forms – The Contact Form Builder That Grows With You <= 3.13.2 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Exposure via Unscoped Bearer Token

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 3.13.2. This is due to the plugin not properly verifying that a user is authorized before the `ninja-forms-views` REST endpoints return form metadata and submission content. This makes it possible for unauthenticated attackers to read arbitrary form definitions and submission records via a leaked bearer token granted they can load any page containing the Submissions Table block. NOTE: The developer released a patch for this issue in 3.13.1, but inadvertently introduced a REST API endpoint in which a valid bearer token could be minted for arbitrary form IDs, making this patch ineffective.