{"id":3614,"date":"2026-06-01T19:30:33","date_gmt":"2026-06-01T19:30:33","guid":{"rendered":"https:\/\/www.ucartz.com\/updates\/drupal-7-term-reference-tree-module-cross-site-scripting-vulnerability-cve-2026-4093-medium-severity\/"},"modified":"2026-06-01T19:30:35","modified_gmt":"2026-06-01T19:30:35","slug":"drupal-7-term-reference-tree-module-cross-site-scripting-vulnerability-cve-2026-4093-medium-severity","status":"publish","type":"post","link":"https:\/\/www.ucartz.com\/updates\/drupal-7-term-reference-tree-module-cross-site-scripting-vulnerability-cve-2026-4093-medium-severity\/","title":{"rendered":"Drupal 7 Term Reference Tree Module Cross-Site Scripting Vulnerability (CVE-2026-4093) \u2014 Medium Severity"},"content":{"rendered":"<h2>Understanding the Drupal 7 Term Reference Tree Module XSS Vulnerability<\/h2>\n<p>A security flaw, identified as CVE-2026-4093, has been discovered in the Drupal 7 Term Reference Tree module. This vulnerability involves two types of Cross-Site Scripting (XSS) issues that could allow an attacker to inject malicious code. If exploited, this code could run in a user&#8217;s browser when they view certain parts of a Drupal site, potentially leading to unauthorized actions or data theft.<\/p>\n<p>The first XSS vector relates to how token display templates handle certain content. If the Token module is active and display templates are set up, an attacker who can edit taxonomy terms can insert harmful HTML or JavaScript. This code then runs when the affected field is shown. The second XSS issue is in how taxonomy term labels are displayed. Users with the ability to create or change taxonomy terms can inject scripts into the term names. These scripts then execute when a form containing the widget is viewed by other users.<\/p>\n<h2>CVE Details<\/h2>\n<p><strong>Product:<\/strong> Drupal 7 Term Reference Tree module<br \/>\n<strong>Published:<\/strong> May 21, 2026<br \/>\n<strong>Severity:<\/strong> Medium<br \/>\n<strong>Status:<\/strong> Analyzed<\/p>\n<h2>Affected Products<\/h2>\n<p>The vulnerability impacts versions of the Drupal 7 Term Reference Tree module from 7.x-1.x up to and including 7.x-1.11. If you are using any of these versions, your Drupal installation is at risk.<\/p>\n<h2>Current Status<\/h2>\n<p>The vulnerability has been thoroughly analyzed, meaning its nature and potential impact are well understood by security researchers and the Drupal community. This &#8220;Analyzed&#8221; status indicates that information about the vulnerability is available, aiding in the development and deployment of fixes.<\/p>\n<h2>Severity Level<\/h2>\n<p>This Cross-Site Scripting vulnerability is rated as Medium severity, with a CVSS score of 5.4. While it doesn&#8217;t typically allow an attacker to take complete control of your server, it can enable them to execute malicious scripts within a user&#8217;s web browser. This can lead to various issues, such as session hijacking, defacement of the website, or redirecting users to malicious sites, especially if the attacker has the necessary permissions to manipulate taxonomy terms.<\/p>\n<h2>Possible Solutions<\/h2>\n<p>To protect your Drupal 7 site from this vulnerability, the most critical step is to upgrade your Drupal 7 Term Reference Tree module. Users should update to version <strong>7.x-1.12<\/strong> or any later versions that may be available. This updated version includes the necessary sanitization fixes to prevent the XSS vectors from being exploited. Regularly updating your modules is a fundamental practice in maintaining a secure web environment.<\/p>\n<h2>References<\/h2>\n<p>https:\/\/d7es.tag1.com\/security-advisories\/taxonomy-term-reference-tree-widget-moderately-critical-cross-site-scripting<br \/>\nhttps:\/\/www.herodevs.com\/vulnerability-directory\/cve-2026-4093<\/p>\n<p>For further reading on XSS vulnerabilities and how to prevent them in your web applications, you might find our article on <a href=\\\"\/blog\/understanding-cross-site-scripting-attacks\\\">Understanding Cross-Site Scripting Attacks<\/a> helpful.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Understanding the Drupal 7 Term Reference Tree Module XSS Vulnerability A security flaw, identified as CVE-2026-4093, has been discovered in the Drupal 7 Term Reference Tree module. This vulnerability involves two types of Cross-Site Scripting (XSS) issues that could allow an attacker to inject malicious code. If exploited, this code could run in a user&#8217;s [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":2546,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[820,691,1111,695,692],"class_list":["post-3614","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","tag-content-management","tag-drupal","tag-drupal-7-term-reference-tree-module","tag-web-security","tag-xss"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Drupal 7 Term Reference Tree Module Cross-Site Scripting Vulnerability (CVE-2026-4093) \u2014 Medium 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\/drupal-7-term-reference-tree-module-cross-site-scripting-vulnerability-cve-2026-4093-medium-severity\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Drupal 7 Term Reference Tree Module Cross-Site Scripting Vulnerability (CVE-2026-4093) \u2014 Medium Severity - Web Hosting and IT Consultancy Services\" \/>\n<meta property=\"og:description\" content=\"Understanding the Drupal 7 Term Reference Tree Module XSS Vulnerability A security flaw, identified as CVE-2026-4093, has been discovered in the Drupal 7 Term Reference Tree module. This vulnerability involves two types of Cross-Site Scripting (XSS) issues that could allow an attacker to inject malicious code. 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