{"id":53655,"date":"2025-06-19T20:46:54","date_gmt":"2025-06-19T20:46:54","guid":{"rendered":""},"modified":"2025-09-08T17:19:03","modified_gmt":"2025-09-08T23:19:03","slug":"cve-2025-48918-cross-site-scripting-vulnerability-in-drupal-simple-klaro","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-48918-cross-site-scripting-vulnerability-in-drupal-simple-klaro\/","title":{"rendered":"<strong>CVE-2025-48918: Cross-site Scripting Vulnerability in Drupal Simple Klaro<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cyber threat landscape is ever-evolving, and one such recent development is the identification of a new vulnerability, CVE-2025-48918. This flaw exposes systems to potential compromise or data leakage, creating a significant concern for those using Drupal Simple Klaro. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47110-high-severity-stored-cross-site-scripting-xss-vulnerability-in-adobe-commerce\/\"  data-wpil-monitor-id=\"60422\">vulnerability is a type of Cross-site Scripting<\/a> (XSS) issue known as &#8216;Improper Neutralization of Input During Web Page Generation. This issue is especially critical as it affects Drupal Simple Klaro from its inception (version 0.0.0) up until version 1.10.0, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5978-critical-vulnerability-in-tenda-fh1202-1-2-0-14-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"61052\">potentially impacting a large number of systems<\/a> worldwide.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-48918<br \/>\nSeverity: High (CVSS score: 8.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5491-acer-controlcenter-remote-code-execution-vulnerability-potential-system-compromise\/\"  data-wpil-monitor-id=\"61250\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2429774630\" 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>Drupal Simple Klaro | 0.0.0 before 1.10.0<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-34711-improper-uri-validation-vulnerability-in-geoserver\/\"  data-wpil-monitor-id=\"60414\">vulnerability stems from the improper<\/a> neutralization of input during web page generation in Drupal&#8217;s Simple Klaro. Essentially, the software does not sufficiently sanitize user-supplied input. This allows an attacker to inject a malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6512-script-execution-with-admin-privileges-on-brain2-server\/\"  data-wpil-monitor-id=\"63466\">script that can be executed<\/a> in the victim&#8217;s browser. Once executed, it can lead to several harmful outcomes, such as data theft, session hijacking, or even complete <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6435-firefox-vulnerability-leading-to-potential-system-compromise-and-data-leakage\/\"  data-wpil-monitor-id=\"65552\">system compromise<\/a> in severe cases.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-294114522\" 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>Consider the following conceptual example <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49526-out-of-bounds-write-vulnerability-in-illustrator-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"75260\">illustrating how the vulnerability<\/a> might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/drupal-simple-klaro\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;user_input&quot;: &quot;&lt;script&gt;malicious_code_here&lt;\/script&gt;&quot; }<\/code><\/pre>\n<p>In this scenario, the attacker injects a malicious script (`<script>malicious_code_here<\/script>`) into the `user_input` field. If the input is not properly sanitized, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50754-stored-cross-site-scripting-xss-vulnerability-leading-to-remote-code-execution-in-unisite-cms-5-0\/\"  data-wpil-monitor-id=\"74613\">script will be rendered and executed<\/a> when the page is loaded.<br \/>\nTo address and mitigate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49847-buffer-overflow-vulnerability-in-llama-cpp-leading-to-potential-code-execution\/\"  data-wpil-monitor-id=\"62654\">potential risks associated with this vulnerability<\/a>, it is highly recommended to apply the vendor patch. In the absence of the patch, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. However, these are not long-term <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5310-remote-code-execution-vulnerability-in-dover-fueling-solutions-progauge-maglink-lx-consoles\/\"  data-wpil-monitor-id=\"65551\">solutions and will not completely eliminate the vulnerability<\/a>, so applying the patch as soon as possible is critical.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cyber threat landscape is ever-evolving, and one such recent development is the identification of a new vulnerability, CVE-2025-48918. This flaw exposes systems to potential compromise or data leakage, creating a significant concern for those using Drupal Simple Klaro. The vulnerability is a type of Cross-site Scripting (XSS) issue known as &#8216;Improper Neutralization of [&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":[81],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-53655","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-xss"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53655","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=53655"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53655\/revisions"}],"predecessor-version":[{"id":67839,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53655\/revisions\/67839"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=53655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=53655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=53655"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=53655"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=53655"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=53655"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=53655"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=53655"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=53655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}