{"id":35840,"date":"2025-05-07T01:28:50","date_gmt":"2025-05-07T01:28:50","guid":{"rendered":""},"modified":"2025-05-09T12:02:39","modified_gmt":"2025-05-09T12:02:39","slug":"cve-2025-46558-cross-site-scripting-vulnerability-in-xwiki-s-markdown-syntax","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-46558-cross-site-scripting-vulnerability-in-xwiki-s-markdown-syntax\/","title":{"rendered":"<strong>CVE-2025-46558: Cross-Site Scripting Vulnerability in XWiki&#8217;s Markdown Syntax<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-46558 is a high severity vulnerability found in XWiki&#8217;s Syntax Markdown, a plugin that allows users to import Markdown content into wiki pages and create wiki content using Markdown. This vulnerability, if exploited, could lead to cross-site scripting (XSS) attacks that can compromise system integrity and potentially lead to data leakage. This poses a significant risk to any organization that utilizes XWiki versions 8.2 to 8.9, as it allows malicious users to embed harmful JavaScript code into wiki content, which is then <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1950-local-user-command-execution-vulnerability-in-ibm-hardware-management-console\/\"  data-wpil-monitor-id=\"40553\">executed on any user&#8217;s<\/a> browser visiting the infected page.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-46558<br \/>\nSeverity: High (9.0 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: System compromise, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50612-escalation-of-privileges-and-data-leakage-in-fit2cloud-cloud-explorer-lite\/\"  data-wpil-monitor-id=\"41277\">Data leakage<\/a><\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-282478476\" 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>XWiki | 8.2 to before 8.9<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The XSS vulnerability in XWiki&#8217;s <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20229-remote-code-execution-vulnerability-in-splunk-enterprise-and-cloud-platforms\/\"  data-wpil-monitor-id=\"40691\">Markdown<\/a> syntax allows a malicious user to embed JavaScript code into a wiki document or comment using Markdown. This JavaScript <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46661-unauthenticated-remote-code-execution-vulnerability-in-ipw-systems-metazo\/\"  data-wpil-monitor-id=\"40726\">code is then executed<\/a> on the browser of any user visiting the infected page. If the user <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45947-arbitrarily-executable-code-vulnerability-in-online-banquet-booking-system-v1-2\/\"  data-wpil-monitor-id=\"40831\">executing this code<\/a> has admin or programming rights, this issue compromises the confidentiality, integrity, and availability of the entire XWiki installation.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2205942427\" 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>Here&#8217;s a conceptual example of how the vulnerability might be exploited. This could be an embedded JavaScript code in a Markdown comment:<\/p>\n<pre><code class=\"\" data-line=\"\">Comment:\n`&lt;script&gt;malicious code goes here&lt;\/script&gt;`<\/code><\/pre>\n<p>This code will then be executed on the browser of any user viewing the comment, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3914-potential-arbitrary-file-uploads-and-system-compromise-in-aeropage-sync-for-airtable-wordpress-plugin\/\"  data-wpil-monitor-id=\"40596\">potentially leading to a system compromise<\/a> or data leakage.<\/p>\n<p><strong>Impact Summary<\/strong><\/p>\n<p>Successful exploitation of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39470-path-traversal-vulnerability-in-thimpress-ivy-school-leading-to-php-local-file-inclusion\/\"  data-wpil-monitor-id=\"40902\">vulnerability can lead<\/a> to a full system compromise. This occurs when the malicious JavaScript <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2015-2079-remote-code-execution-vulnerability-in-usermin\/\"  data-wpil-monitor-id=\"40845\">code is executed<\/a> by a user with admin or programming rights, compromising the confidentiality, integrity, and availability of the entire XWiki installation. It can result in <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-25777-unauthorized-user-profile-access-in-codeastro-bus-ticket-booking-system\/\"  data-wpil-monitor-id=\"41358\">unauthorized access<\/a>, data leakage, and potential disruption of service.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>Users and administrators are advised to apply the patch provided by the vendor in version 8.9. If the patch cannot be applied immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as temporary mitigation. It is also recommended to limit user rights and privileges to prevent the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46616-arbitrary-remote-code-execution-vulnerability-in-quantum-stornext-web-gui-api\/\"  data-wpil-monitor-id=\"40881\">execution of malicious code<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-46558 is a high severity vulnerability found in XWiki&#8217;s Syntax Markdown, a plugin that allows users to import Markdown content into wiki pages and create wiki content using Markdown. This vulnerability, if exploited, could lead to cross-site scripting (XSS) attacks that can compromise system integrity and potentially lead to data leakage. This poses a [&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-35840","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\/35840","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=35840"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/35840\/revisions"}],"predecessor-version":[{"id":36655,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/35840\/revisions\/36655"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=35840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=35840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=35840"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=35840"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=35840"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=35840"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=35840"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=35840"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=35840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}