{"id":70794,"date":"2025-09-03T18:39:38","date_gmt":"2025-09-03T18:39:38","guid":{"rendered":""},"modified":"2025-09-27T07:38:45","modified_gmt":"2025-09-27T13:38:45","slug":"cve-2025-52761-deserialization-of-untrusted-data-vulnerability-in-wp-funnel-manager","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-52761-deserialization-of-untrusted-data-vulnerability-in-wp-funnel-manager\/","title":{"rendered":"<strong>CVE-2025-52761: Deserialization of Untrusted Data Vulnerability in WP Funnel Manager<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the world of cybersecurity, a new vulnerability has been identified and cataloged as CVE-2025-52761. This vulnerability resides in the popular WP Funnel Manager, a plugin used widely in WordPress sites. The vulnerability pertains to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49683-integer-overflow-vulnerability-in-virtual-hard-disk-vhdx-leading-to-unauthorized-code-execution\/\"  data-wpil-monitor-id=\"78420\">deserialization of untrusted data<\/a> which could potentially lead to system compromise or data leakage. It is crucial for organizations and individuals using WP Funnel <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-41531-sql-injection-vulnerabilities-in-hospital-management-system-v4\/\"  data-wpil-monitor-id=\"78699\">Manager to understand the nature of this vulnerability<\/a>, how it can be exploited, and how to mitigate its risks.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-52761<br \/>\nSeverity: Critical (9.8 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50160-heap-based-buffer-overflow-in-windows-rras-posing-system-compromise-risk\/\"  data-wpil-monitor-id=\"78493\">System compromise<\/a>, Data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1182567260\" 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>WP Funnel Manager | n\/a through 1.4.0<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability, CVE-2025-52761, is a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47994-elevation-of-privileges-through-deserialization-of-untrusted-data-in-microsoft-office\/\"  data-wpil-monitor-id=\"79006\">deserialization of untrusted data<\/a> vulnerability. It occurs when the application <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49712-deserialization-of-untrusted-data-in-microsoft-office-sharepoint\/\"  data-wpil-monitor-id=\"79009\">deserializes untrusted data<\/a> without proper validation. In the case of the WP Funnel Manager, an attacker can send maliciously crafted data to the application, which it then deserializes, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7384-php-object-injection-vulnerability-in-wordpress-plugin-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"79049\">leading to an Object Injection<\/a>. This can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8715-arbitrary-code-and-sql-injection-vulnerability-in-postgresql\/\"  data-wpil-monitor-id=\"78779\">arbitrary code<\/a> execution, which an attacker can leverage to compromise the system or leak sensitive data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1623515977\" 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 is a conceptual example of how the vulnerability might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-funnel-manager\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;object&quot;: {&quot;type&quot;:&quot;&lt;malicious_object&gt;&quot;, &quot;value&quot;:&quot;&lt;malicious_value&gt;&quot;} }<\/code><\/pre>\n<p>In this example, the attacker sends a POST request to a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55158-critical-memory-management-vulnerability-in-vim-text-editor\/\"  data-wpil-monitor-id=\"78872\">vulnerable endpoint of the WP Funnel Manager<\/a>. The &#8220;object&#8221; in the JSON payload contains a &#8220;type&#8221; and a &#8220;value&#8221;. The &#8220;type&#8221; can be any object type that the application understands and can deserialize, and the &#8220;value&#8221; can contain malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41683-authenticated-remote-code-execution-vulnerability-in-main-web-interface\/\"  data-wpil-monitor-id=\"78950\">code that gets executed<\/a> once the object is deserialized.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The vendor has <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-35115-critical-system-package-download-vulnerability-in-agiloft-release-28\/\"  data-wpil-monitor-id=\"85318\">released a patch to address this vulnerability<\/a>, and it is strongly recommended to apply this patch as soon as possible. In case of delay in patch application or unavailability, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help mitigate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52797-critical-cross-site-request-forgery-csrf-vulnerability-in-josepsitjar-storymap\/\"  data-wpil-monitor-id=\"79378\">vulnerability by monitoring and blocking suspicious requests<\/a>. However, these are temporary measures and cannot replace the need for patching and updating the software.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the world of cybersecurity, a new vulnerability has been identified and cataloged as CVE-2025-52761. This vulnerability resides in the popular WP Funnel Manager, a plugin used widely in WordPress sites. The vulnerability pertains to the deserialization of untrusted data which could potentially lead to system compromise or data leakage. It is crucial for [&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":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-70794","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/70794","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=70794"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/70794\/revisions"}],"predecessor-version":[{"id":78111,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/70794\/revisions\/78111"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=70794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=70794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=70794"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=70794"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=70794"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=70794"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=70794"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=70794"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=70794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}