{"id":4359,"date":"2026-10-24T19:01:46","date_gmt":"2026-10-24T19:01:46","guid":{"rendered":"https:\/\/www.ucartz.com\/updates\/n8n-privilege-escalation-vulnerability-cve-2026-65016-high-severity\/"},"modified":"2026-10-24T19:01:48","modified_gmt":"2026-10-24T19:01:48","slug":"n8n-privilege-escalation-vulnerability-cve-2026-65016-high-severity","status":"publish","type":"post","link":"https:\/\/www.ucartz.com\/updates\/n8n-privilege-escalation-vulnerability-cve-2026-65016-high-severity\/","title":{"rendered":"n8n Privilege Escalation Vulnerability (CVE-2026-65016) \u2014 High Severity"},"content":{"rendered":"<h2>Overview<\/h2>\n<p>A significant security flaw has been discovered in n8n, an open-source workflow automation platform. This vulnerability, tracked as CVE-2026-65016, allows an attacker to escalate their privileges to gain full administrative control over an n8n instance. This occurs specifically when Enterprise Single Sign-On (SSO) is enabled and improperly configured, allowing an attacker to manipulate their assigned role within the system.<\/p>\n<h2>CVE Details<\/h2>\n<ul>\n<li><strong>Product:<\/strong> n8n<\/li>\n<li><strong>Published Date:<\/strong> July 22, 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 privilege escalation vulnerability impacts several versions of n8n, specifically:<\/p>\n<ul>\n<li>n8n versions prior to 1.123.64<\/li>\n<li>n8n versions prior to 2.29.8<\/li>\n<li>n8n versions prior to 2.30.1<\/li>\n<\/ul>\n<p>Both community and enterprise editions of n8n running on Node.js are affected if they fall within these version ranges.<\/p>\n<h2>Current Status<\/h2>\n<p>The vulnerability is currently &quot;Analyzed&quot;, meaning it has been investigated, and information regarding its nature, impact, and potential solutions has been made available.<\/p>\n<h2>Severity Level<\/h2>\n<p>Rated as &quot;High&quot; severity with a CVSS score of 8.8, this vulnerability poses a serious risk. A high severity rating indicates that exploiting this flaw could lead to significant unauthorized access and control. In this case, an attacker could become an &quot;instance owner,&quot; gaining complete administrative power over all workflows, user accounts, credentials, and the overall configuration of the affected n8n platform. This could result in severe data breaches, system manipulation, and widespread disruption if exploited.<\/p>\n<h2>Possible Solutions<\/h2>\n<p>The n8n team has released updates to address this vulnerability. Users are strongly advised to upgrade their n8n instances to one of the following patched versions or later:<\/p>\n<ul>\n<li>n8n version 1.123.64<\/li>\n<li>n8n version 2.29.8<\/li>\n<li>n8n version 2.30.1<\/li>\n<\/ul>\n<p>If immediate upgrading is not feasible, the following temporary workarounds can help mitigate the risk, though they do not fully eliminate it:<\/p>\n<ol>\n<li><strong>Disable instance-role provisioning:<\/strong> Ensure the <code>N8N_SSO_SCOPES_PROVISION_INSTANCE_ROLE<\/code> flag is unset or explicitly set to <code>false<\/code>. This feature is disabled by default, so verify its status if you are using Enterprise SSO.<\/li>\n<li><strong>Audit IdP claim mappings:<\/strong> Review your Identity Provider (IdP) configurations to confirm that no user-controlled attributes can influence the <code>instance-role<\/code> claim value. This prevents attackers from asserting a <code>global:owner<\/code> role.<\/li>\n<li><strong>Restrict SSO access:<\/strong> Limit Enterprise SSO access to only fully trusted users.<\/li>\n<\/ol>\n<p>These workarounds should be considered short-term measures. A full upgrade to a patched version is the recommended and most effective solution.<\/p>\n<h2>References<\/h2>\n<ul>\n<li>https:\/\/github.com\/n8n-io\/n8n\/security\/advisories\/GHSA-35q8-9mj6-wjmf<\/li>\n<li>https:\/\/www.vulncheck.com\/advisories\/n8n-before-privilege-escalation-via-sso-instance-role<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Overview A significant security flaw has been discovered in n8n, an open-source workflow automation platform. This vulnerability, tracked as CVE-2026-65016, allows an attacker to escalate their privileges to<\/p>\n","protected":false},"author":17,"featured_media":3515,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1213,1067,744,1336,1068],"class_list":["post-4359","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","tag-automation-platform","tag-n8n","tag-privilege-escalation","tag-sso-security","tag-workflow-automation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>n8n Privilege Escalation (CVE-2026-65016) \u2014 High | Ucartz<\/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-privilege-escalation-vulnerability-cve-2026-65016-high-severity\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"n8n Privilege Escalation Vulnerability (CVE-2026-65016) \u2014 High Severity - Ucartz Updates\" \/>\n<meta property=\"og:description\" content=\"Overview A significant security flaw has been discovered in n8n, an open-source workflow automation platform. This vulnerability, tracked as CVE-2026-65016, allows an attacker to escalate their privileges to\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ucartz.com\/updates\/n8n-privilege-escalation-vulnerability-cve-2026-65016-high-severity\/\" \/>\n<meta property=\"og:site_name\" content=\"Ucartz Updates\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-24T19:01:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-24T19:01:48+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\" 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