Is Ultra Addons for Contact Form 7 safe? Known vulnerabilities and latest version

The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the _getObjAttr function in all versions up to, and including, 3.5.54. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). This requires the PDF Generator add-on to be active and a Contact Form 7 form to be configured for PDF generation, as the WPCF7_Submission POP gadget chain relies on CF7 being present to complete the file deletion via __destruct(). Note: This vulnerability can only be exploited when the PDF generator feature is enabled.

The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via File Upload in all versions up to, and including, 3.5.54 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 extension blocklist gatekeeper is bypassed by uploading text-type files (.txt, .csv, .vtt, .srt, .asc) whose contents begin with an HTML payload such as '<BODY onload=…>', as the check classifies these files as text/plain without inspecting their byte content.

Editor PHP Object Injection in Ultimate Addons for Contact Form 7 <= 3.5.51 versions.

The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Arbitrary File Upload due to insufficient file type validation in the 'uacf7_wpcf7_mail_components' function in all versions up to, and including, 3.5.50. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. Note: This is only exploitable when the plugin's PDF Generator module is enabled, which is disabled by default.

Contributor Cross Site Scripting (XSS) in Ultimate Addons for Contact Form 7 <= 3.5.50 versions.

The Ultra Addons for Contact Form 7 WordPress plugin before 3.5.51 does not validate the type or extension of files uploaded through one of its form fields, and stores them at a predictable public path with the attacker-chosen extension intact, allowing unauthenticated users to upload arbitrary files. The PHP handler shipped by default with the Debian and Ubuntu Apache packages maps .phar to PHP alongside .php and .phtml, so on that stack the uploaded file is executed and the issue leads to Remote Code Execution and full site takeover. Where the host routes only .php to the PHP handler, the same file is instead served from the site's own origin with its script intact, leading to Stored Cross-Site Scripting.

The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Range Slider 'data-label' and 'data-separator' attributes in all versions up to, and including, 3.5.43 due to insufficient input sanitization and output escaping. 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.

Unauthenticated Cross Site Scripting (XSS) in Ultimate Addons for Contact Form 7 <=3.5.45 versions.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Themefic Ultimate Addons for Contact Form 7 ultimate-addons-for-contact-form-7 allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ultimate Addons for Contact Form 7: from n/a through <= 3.5.36.

Missing Authorization vulnerability in Themefic Ultimate Addons for Contact Form 7 ultimate-addons-for-contact-form-7 allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ultimate Addons for Contact Form 7: from n/a through <= 3.5.34.

The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'uacf7_get_generated_pdf' function in all versions up to, and including, 3.5.33. This makes it possible for authenticated attackers, with Subscriber-level access and above, to generate and get form submission PDF, when the "PDF Generator" and the "Database" addons are enabled (disabled by default).

The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's UACF7_CUSTOM_FIELDS shortcode in all versions up to, and including, 3.5.21 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 Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Database module in versions 3.5.11 to 3.5.19 due to insufficient input sanitization and output escaping. The unfiltered field names are stored alongside the sanitized values. Later, the admin-side AJAX endpoint ajax_get_table_data() returns those raw names as JSON column headers, and the client-side DataTables renderer injects them directly into the DOM without any HTML encoding. 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 Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'save_options' function in all versions up to, and including, 3.5.12. This makes it possible for authenticated attackers, with Administrator-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Missing Authorization vulnerability in Themefic Ultimate Addons for Contact Form 7 ultimate-addons-for-contact-form-7 allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ultimate Addons for Contact Form 7: from n/a through <= 3.2.6.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Themefic Ultimate Addons for Contact Form 7.This issue affects Ultimate Addons for Contact Form 7: from n/a through 3.1.23.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Themefic Ultimate Addons for Contact Form 7 allows Stored XSS.This issue affects Ultimate Addons for Contact Form 7: from n/a through 3.2.0.

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Themefic Ultimate Addons for Contact Form 7 plugin <= 3.2.0 versions.

Unauth. SQL Injection (SQLi) vulnerability in Themefic Ultimate Addons for Contact Form 7 plugin <= 3.1.23 versions.

The Ultimate Addons for Contact Form 7 plugin for WordPress is vulnerable to SQL Injection via the 'id' parameter in versions up to, and including, 3.1.23. This makes it possible for authenticated attackers of any authorization level to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.