{"id":55324,"date":"2025-06-27T05:09:21","date_gmt":"2025-06-27T05:09:21","guid":{"rendered":""},"modified":"2025-08-07T11:16:30","modified_gmt":"2025-08-07T17:16:30","slug":"cve-2025-3515-critical-arbitrary-file-upload-vulnerability-in-drag-and-drop-multiple-file-upload-for-contact-form-7-plugin","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-3515-critical-arbitrary-file-upload-vulnerability-in-drag-and-drop-multiple-file-upload-for-contact-form-7-plugin\/","title":{"rendered":"<strong>CVE-2025-3515: Critical Arbitrary File Upload Vulnerability in Drag and Drop Multiple File Upload for Contact Form 7 Plugin<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity world is waking up to a new threat, CVE-2025-3515, a file upload vulnerability found in the popular WordPress plugin, Drag and Drop Multiple File Upload for Contact Form 7. The severity of this vulnerability stems from its potential to allow unauthenticated attackers to upload arbitrary files, including .phar or other dangerous file types, on the affected site&#8217;s server. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6114-critical-vulnerability-in-d-link-dir-619l-leading-to-stack-based-buffer-overflow\/\"  data-wpil-monitor-id=\"61655\">vulnerability could lead<\/a> to potential system compromise or data leakage, as these maliciously uploaded files could be used for remote code execution on servers configured to handle .phar files as executable PHP scripts.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-3515<br \/>\nSeverity: Critical (8.1 CVSS score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5868-critical-vulnerability-in-rt-thread-leading-to-system-compromise-and-data-leakage\/\"  data-wpil-monitor-id=\"63878\">System compromise<\/a>, potential data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-913222531\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p>Drag and Drop Multiple File Upload for <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24773-sql-injection-vulnerability-in-wpcrm-crm-for-contact-form-cf7-woocommerce\/\"  data-wpil-monitor-id=\"62319\">Contact Form<\/a> 7 | All versions up to 1.3.8.9<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of insufficient <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47559-unrestricted-file-upload-vulnerability-in-romancode-mapsvg\/\"  data-wpil-monitor-id=\"62332\">file type validation in the Drag and Drop Multiple File Upload<\/a> for Contact Form 7 plugin. Specifically, the plugin&#8217;s blacklist can be bypassed, allowing an attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4413-arbitrary-file-upload-vulnerability-in-pixabay-images-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"62737\">upload arbitrary<\/a>, potentially harmful files. Most notably, malicious .phar <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48125-high-risk-php-remote-file-inclusion-vulnerability-in-wp-event-manager\/\"  data-wpil-monitor-id=\"61897\">files can be uploaded and subsequently executed as PHP<\/a> scripts on servers configured to handle .phar files as such. This is particularly concerning in default Apache+mod_php configurations, where the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40737-critical-file-path-validation-vulnerability-in-sinec-nms\/\"  data-wpil-monitor-id=\"66613\">file extension is not strictly validated<\/a> before being passed to the PHP interpreter.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1766498272\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>The following is a conceptual example of an HTTP POST <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6001-cross-site-request-forgery-vulnerability-in-virtuemart-product-image-upload-function\/\"  data-wpil-monitor-id=\"62140\">request that could be used to exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-content\/plugins\/drag-and-drop-multiple-file-upload-contact-form-7\/upload.php HTTP\/1.1\nHost: target.example.com\nContent-Type: multipart\/form-data; boundary=----WebKitFormBoundary123456789\n------WebKitFormBoundary123456789\nContent-Disposition: form-data; name=&quot;file&quot;; filename=&quot;malicious.phar&quot;\nContent-Type: application\/octet-stream\n[...] \/\/ Contents of the malicious .phar file here\n------WebKitFormBoundary123456789--<\/code><\/pre>\n<p>This request attempts to upload a .phar <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39475-path-traversal-vulnerability-leading-to-php-local-file-inclusion-in-frenify-arlo\/\"  data-wpil-monitor-id=\"62032\">file named &#8220;malicious.phar&#8221; to the upload endpoint of the vulnerable<\/a> plugin. If successful, the uploaded file could be executed as a PHP script on the server, potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47167-microsoft-office-type-confusion-vulnerability-leading-to-unauthorized-local-code-execution\/\"  data-wpil-monitor-id=\"61766\">leading to remote code<\/a> execution, system compromise, or data leakage.<\/p>\n<p><strong>Recommended Mitigation<\/strong><\/p>\n<p>The best course of action is to update the Drag and Drop Multiple File <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36631-critical-file-overwrite-vulnerability-in-tenable-agent\/\"  data-wpil-monitor-id=\"61865\">Upload for Contact Form<\/a> 7 plugin to a version where this vulnerability has been patched. If a patch is not yet available, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity world is waking up to a new threat, CVE-2025-3515, a file upload vulnerability found in the popular WordPress plugin, Drag and Drop Multiple File Upload for Contact Form 7. The severity of this vulnerability stems from its potential to allow unauthenticated attackers to upload arbitrary files, including .phar or other dangerous file [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[103],"product":[],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-55324","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apache","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55324","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=55324"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55324\/revisions"}],"predecessor-version":[{"id":60608,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55324\/revisions\/60608"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=55324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=55324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=55324"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=55324"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=55324"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=55324"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=55324"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=55324"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=55324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}