{"id":74628,"date":"2025-09-13T10:01:32","date_gmt":"2025-09-13T10:01:32","guid":{"rendered":""},"modified":"2025-10-10T00:14:11","modified_gmt":"2025-10-10T06:14:11","slug":"cve-2025-56265-arbitrary-file-upload-vulnerability-in-n8n-s-chat-trigger-component","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-56265-arbitrary-file-upload-vulnerability-in-n8n-s-chat-trigger-component\/","title":{"rendered":"<strong>CVE-2025-56265: Arbitrary File Upload Vulnerability in N8N&#8217;s Chat Trigger Component<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The CVE-2025-56265 vulnerability represents an arbitrary file upload exploit within three versions of N8N&#8217;s Chat Trigger component. This vulnerability is notable due to its potential to allow attackers to execute arbitrary code by uploading a crafted HTML file. The affected systems are at risk of compromise and potential data leakage, a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54887-significant-security-vulnerability-in-jwe-ruby-encryption-implementation\/\"  data-wpil-monitor-id=\"82672\">significant threat to the security<\/a> and integrity of the system and user data. Any organization utilizing the affected versions of the N8N software should be aware of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58280-object-heap-address-exposure-vulnerability-in-ark-ets\/\"  data-wpil-monitor-id=\"87238\">vulnerability and take immediate steps to address<\/a> it.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-56265<br \/>\nSeverity: High (8.8 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22404-potential-system-compromise-due-to-use-after-free-vulnerability\/\"  data-wpil-monitor-id=\"85642\">System Compromise<\/a>, Data Leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3951730307\" 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>N8N | v1.95.3<br \/>\nN8N | v1.100.1<br \/>\nN8N | v1.101.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of the ability to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8450-unauthenticated-arbitrary-file-upload-vulnerability-in-fortra-s-filecatalyst\/\"  data-wpil-monitor-id=\"82257\">upload arbitrary files<\/a> in the Chat Trigger component of N8N. The attacker creates an HTML <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41714-critical-vulnerability-in-upload-endpoint-causing-arbitrary-file-write-and-potential-remote-code-execution\/\"  data-wpil-monitor-id=\"89483\">file with embedded malicious code<\/a>. When this file is uploaded to the affected N8N versions, the system is tricked into <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50692-critical-code-execution-vulnerability-in-foxcms-v1-2-5\/\"  data-wpil-monitor-id=\"82172\">executing the malicious code<\/a> contained within the uploaded HTML file. This allows the attacker to control the system, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8067-udisks-daemon-vulnerability-leading-to-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"85718\">potentially compromising it or causing data<\/a> leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2911222622\" 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 pseudocode illustrates a conceptual example of how an attacker might exploit this vulnerability:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/chat_trigger\/upload 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.html&quot;\nContent-Type: text\/html\n&lt;html&gt;\n&lt;body&gt;\n&lt;script&gt;\n\/\/ malicious code here\n&lt;\/script&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;\n------WebKitFormBoundary7MA4YWxkTrZu0gW--<\/code><\/pre>\n<p>Here, the malicious.html file contains a script that, when executed, may allow the attacker to compromise the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54742-data-deserialization-vulnerability-in-wpevently-leading-to-possible-system-compromise\/\"  data-wpil-monitor-id=\"86419\">system or cause data<\/a> leakage.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The CVE-2025-56265 vulnerability represents an arbitrary file upload exploit within three versions of N8N&#8217;s Chat Trigger component. This vulnerability is notable due to its potential to allow attackers to execute arbitrary code by uploading a crafted HTML file. The affected systems are at risk of compromise and potential data leakage, a significant threat 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":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-74628","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\/74628","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=74628"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/74628\/revisions"}],"predecessor-version":[{"id":82330,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/74628\/revisions\/82330"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=74628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=74628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=74628"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=74628"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=74628"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=74628"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=74628"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=74628"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=74628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}