{"id":49153,"date":"2025-06-05T19:29:43","date_gmt":"2025-06-05T19:29:43","guid":{"rendered":""},"modified":"2025-06-09T17:19:01","modified_gmt":"2025-06-09T23:19:01","slug":"cve-2025-1763-cross-site-scripting-and-content-security-policy-bypass-in-gitlab-ee","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-1763-cross-site-scripting-and-content-security-policy-bypass-in-gitlab-ee\/","title":{"rendered":"<strong>CVE-2025-1763: Cross-Site-Scripting and Content Security Policy Bypass in GitLab EE<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the rapidly evolving cybersecurity landscape, new threats are continually emerging. One such recent vulnerability, designated as CVE-2025-1763, poses a significant threat to the security of GitLab EE (Enterprise Edition) users. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5098-printershare-android-app-vulnerability-allows-unauthorized-gmail-account-access\/\"  data-wpil-monitor-id=\"55123\">vulnerability allows<\/a> for a cross-site-scripting (XSS) attack and content security policy bypass in a user&#8217;s browser under specific conditions. Given the widespread use of GitLab EE among organizations, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46458-critical-cross-site-request-forgery-csrf-vulnerability-leading-to-sql-injection-in-occupancyplan\/\"  data-wpil-monitor-id=\"55673\">vulnerability has far-reaching implications and could potentially lead<\/a> to significant damage if exploited by malicious actors.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-1763<br \/>\nSeverity: High (CVSS: 8.7)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32309-potential-system-compromise-due-to-remote-file-inclusion-in-php-program\/\"  data-wpil-monitor-id=\"56578\">Potential system compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3042339897\" 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>GitLab EE | 16.6 before 17.9.7<br \/>\nGitLab EE | 17.10 before 17.10.5<br \/>\nGitLab EE | 17.11 before 17.11.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The CVE-2025-1763 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-13955-sql-injection-vulnerability-in-aspect-nexus-and-matrix-series\/\"  data-wpil-monitor-id=\"55062\">vulnerability allows an attacker to inject<\/a> malicious scripts into a webpage which can be executed in the user&#8217;s browser. This happens by <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30466-critical-bypass-of-same-origin-policy-in-major-apple-software\/\"  data-wpil-monitor-id=\"57263\">bypassing the Content Security Policy<\/a> (CSP), a critical security feature designed to prevent XSS attacks. The attacker then uses these scripts to manipulate the DOM environment in the user&#8217;s browser, potentially leading to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39350-unauthorized-access-vulnerability-in-rocket-apps-wproject\/\"  data-wpil-monitor-id=\"55672\">unauthorized access<\/a>, data theft, or other malicious actions.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3200055909\" 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>Below is a conceptual example of how the vulnerability might be exploited. This example uses a malicious payload in an HTTP <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4366-request-smuggling-vulnerability-in-pingora-s-proxying-framework\/\"  data-wpil-monitor-id=\"56577\">request to the vulnerable<\/a> endpoint:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/vulnerable\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;malicious_payload&quot;: &quot;&lt;script&gt;\/* Bad JavaScript goes here *\/&lt;\/script&gt;&quot; }<\/code><\/pre>\n<p>In this example, the &#8220;malicious_payload&#8221; contains a script that could be executed in the user&#8217;s browser if the server does not correctly sanitize the input or enforce a robust Content <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48757-insufficient-database-row-level-security-policy-in-lovable\/\"  data-wpil-monitor-id=\"57363\">Security Policy<\/a>.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>To mitigate the CVE-2025-1763 vulnerability, it is recommended to apply the vendor patch released by GitLab. The patches for the affected versions can be found on the GitLab website. In the event that applying the patch is not immediately feasible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure, helping to detect and prevent <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5100-a-double-free-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"57264\">potential exploitation of this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the rapidly evolving cybersecurity landscape, new threats are continually emerging. One such recent vulnerability, designated as CVE-2025-1763, poses a significant threat to the security of GitLab EE (Enterprise Edition) users. This vulnerability allows for a cross-site-scripting (XSS) attack and content security policy bypass in a user&#8217;s browser under specific conditions. Given the widespread [&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":[102],"product":[],"attack_vector":[81],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-49153","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-gitlab","attack_vector-xss"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/49153","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=49153"}],"version-history":[{"count":6,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/49153\/revisions"}],"predecessor-version":[{"id":51214,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/49153\/revisions\/51214"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=49153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=49153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=49153"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=49153"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=49153"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=49153"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=49153"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=49153"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=49153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}