{"id":3779,"date":"2026-06-26T13:33:27","date_gmt":"2026-06-26T13:33:27","guid":{"rendered":"https:\/\/www.ucartz.com\/updates\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\/"},"modified":"2026-06-26T13:33:29","modified_gmt":"2026-06-26T13:33:29","slug":"n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity","status":"publish","type":"post","link":"https:\/\/www.ucartz.com\/updates\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\/","title":{"rendered":"n8n Missing Token Validation Vulnerability (CVE-2026-54308) \u2014 High Severity"},"content":{"rendered":"<h2>Understanding the n8n Missing Token Validation Vulnerability<\/h2>\n<p>n8n is a popular open-source platform designed to automate workflows, helping users connect various apps and services. A critical security vulnerability, identified as CVE-2026-54308, has been discovered within n8n. This flaw affects specific &#8220;trigger&#8221; nodes, namely the <code>MicrosoftAgent365Trigger<\/code> and <code>StripeTrigger<\/code>. Essentially, these nodes did not properly check the authenticity of incoming requests. This means that an attacker, without needing to be authenticated and if they knew the unique webhook URL, could send fabricated data to your workflows. This could potentially lead to your automated processes executing with data controlled by the attacker, compromising the integrity of your operations.<\/p>\n<h2>CVE Details<\/h2>\n<ul>\n<li><strong>Product Name<\/strong>: n8n<\/li>\n<li><strong>Published Date<\/strong>: June 23, 2026<\/li>\n<li><strong>Severity<\/strong>: HIGH<\/li>\n<li><strong>Status<\/strong>: Analyzed<\/li>\n<\/ul>\n<h2>Affected Products<\/h2>\n<p>This vulnerability specifically impacts instances of n8n running versions prior to <strong>2.25.7<\/strong> and <strong>2.26.2<\/strong>. If your n8n deployment is on any version older than these, it is vulnerable to this security flaw.<\/p>\n<h2>Current Status<\/h2>\n<p>The vulnerability has been thoroughly analyzed and understood by the n8n development team. Patches addressing this issue have already been released, providing a straightforward path to remediation for affected users.<\/p>\n<h2>Severity Level<\/h2>\n<p>CVE-2026-54308 has been classified as a HIGH severity vulnerability. This rating is due to its exploitability: an unauthenticated attacker can trigger the flaw remotely without requiring any special user privileges or user interaction. Successful exploitation could result in unauthorized access to sensitive data and manipulation of workflow processes, leading to significant impacts on confidentiality and data integrity.<\/p>\n<h2>Possible Solutions<\/h2>\n<p>Protecting your n8n environment from CVE-2026-54308 is crucial, and thankfully, a direct fix is available:<\/p>\n<ul>\n<li><strong>Immediate Upgrade<\/strong>: The most effective solution is to update your n8n installation to version <strong>2.25.7<\/strong>, <strong>2.26.2<\/strong>, or any subsequent release. These versions contain the necessary security patches to resolve the vulnerability.<\/li>\n<li><strong>Temporary Mitigations (If Immediate Upgrade Isn&#8217;t Possible)<\/strong>:\n<ul>\n<li><strong>Deactivate Vulnerable Workflows<\/strong>: As a short-term measure, consider temporarily deactivating any workflows that utilize the <code>MicrosoftAgent365Trigger<\/code> node or the <code>StripeTrigger<\/code> node.<\/li>\n<li><strong>Restrict Network Access<\/strong>: Implement network-level restrictions to limit access to your n8n webhook endpoints. Ideally, only allow connections from trusted IP addresses or internal networks.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>It is important to remember that these workarounds offer only partial protection and should be replaced with the official software upgrade as soon as possible.<\/p>\n<h2>References<\/h2>\n<ul>\n<li>https:\/\/github.com\/n8n-io\/n8n\/security\/advisories\/GHSA-jvc7-762p-3743<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Understanding the n8n Missing Token Validation Vulnerability n8n is a popular open-source platform designed to automate workflows, helping users connect various apps and services. A critical security vulnerability, identified as CVE-2026-54308, has been discovered within n8n. This flaw affects specific &#8220;trigger&#8221; nodes, namely the MicrosoftAgent365Trigger and StripeTrigger. Essentially, these nodes did not properly check the [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":3515,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[732,1067,1171,1063,1068],"class_list":["post-3779","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","tag-cybersecurity","tag-n8n","tag-token-validation","tag-webhook-security","tag-workflow-automation"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>n8n Missing Token Validation Vulnerability (CVE-2026-54308) \u2014 High Severity - Web Hosting and IT Consultancy Services<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ucartz.com\/updates\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"n8n Missing Token Validation Vulnerability (CVE-2026-54308) \u2014 High Severity - Web Hosting and IT Consultancy Services\" \/>\n<meta property=\"og:description\" content=\"Understanding the n8n Missing Token Validation Vulnerability n8n is a popular open-source platform designed to automate workflows, helping users connect various apps and services. A critical security vulnerability, identified as CVE-2026-54308, has been discovered within n8n. This flaw affects specific &#8220;trigger&#8221; nodes, namely the MicrosoftAgent365Trigger and StripeTrigger. Essentially, these nodes did not properly check the [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ucartz.com\/updates\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\/\" \/>\n<meta property=\"og:site_name\" content=\"Web Hosting and IT Consultancy Services\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-26T13:33:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-26T13:33:29+00:00\" \/>\n<meta name=\"author\" content=\"Alex Joseph\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alex Joseph\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\\\/\"},\"author\":{\"name\":\"Alex Joseph\",\"@id\":\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/#\\\/schema\\\/person\\\/1ba9bfab02a76dee216c9f55bb634e56\"},\"headline\":\"n8n Missing Token Validation Vulnerability (CVE-2026-54308) \u2014 High Severity\",\"datePublished\":\"2026-06-26T13:33:27+00:00\",\"dateModified\":\"2026-06-26T13:33:29+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\\\/\"},\"wordCount\":397,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/N8N-Banner-ucartz.webp\",\"keywords\":[\"Cybersecurity\",\"n8n\",\"Token Validation\",\"Webhook Security\",\"Workflow Automation\"],\"articleSection\":[\"Security\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\\\/\",\"url\":\"https:\\\/\\\/www.ucartz.com\\\/updates\\\/n8n-missing-token-validation-vulnerability-cve-2026-54308-high-severity\\\/\",\"name\":\"n8n Missing Token Validation Vulnerability (CVE-2026-54308) \u2014 High Severity - 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