{"id":75568,"date":"2025-09-16T06:27:53","date_gmt":"2025-09-16T06:27:53","guid":{"rendered":""},"modified":"2025-10-02T02:01:00","modified_gmt":"2025-10-02T08:01:00","slug":"cve-2025-48101-high-risk-deserialization-of-untrusted-data-vulnerability-in-constant-contact-for-wordpress","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-48101-high-risk-deserialization-of-untrusted-data-vulnerability-in-constant-contact-for-wordpress\/","title":{"rendered":"<strong>CVE-2025-48101: High-Risk Deserialization of Untrusted Data Vulnerability in Constant Contact for WordPress<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity world is in a constant state of flux with new vulnerabilities being discovered regularly. One such vulnerability that has been identified recently is CVE-2025-48101, a high-risk deserialization of untrusted data vulnerability. This flaw is located in the popular <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9990-wordpress-helpdesk-integration-plugin-vulnerable-to-local-file-inclusion\/\"  data-wpil-monitor-id=\"87392\">WordPress plugin<\/a>, Constant Contact for WordPress. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5821-critical-authentication-bypass-vulnerability-in-case-theme-user-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"83268\">vulnerability affects all versions of the plugin<\/a> up to and including 4.1.1. Due to the widespread use of WordPress and Constant Contact, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9791-critical-vulnerability-in-tenda-ac20-16-03-08-05-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"85030\">vulnerability has the potential<\/a> to impact countless businesses and individuals. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24775-high-severity-unrestricted-file-upload-vulnerability-in-made-i-t-forms\/\"  data-wpil-monitor-id=\"83060\">severity of this issue is highlighted by its Common Vulnerability<\/a> Scoring System (CVSS) severity score of 8.8, marking it as a high-risk concern.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-48101<br \/>\nSeverity: High &#8211; CVSS 8.8<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9253-stack-based-buffer-overflow-on-linksys-wi-fi-range-extenders-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"84260\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-56552976\" 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>Constant Contact for WordPress | n\/a through 4.1.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of the deserialization of untrusted data <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7642-authentication-bypass-vulnerability-in-simpler-checkout-wordpress-plugin\/\"  data-wpil-monitor-id=\"83030\">vulnerability in Constant Contact for WordPress<\/a>. Deserialization is the process of converting a stream of bytes back into a copy of the original object. In this case, an attacker can craft a malicious serialized object that, when deserialized by the vulnerable plugin, may result in <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-0074-critical-remote-code-execution-vulnerability-in-sdp-discovery\/\"  data-wpil-monitor-id=\"83649\">code execution<\/a>, thereby compromising the system or leading to potential data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1116212765\" 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>An attacker could potentially use a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8592-wordpress-inspiro-theme-vulnerability-to-cross-site-request-forgery-csrf\/\"  data-wpil-monitor-id=\"85434\">request similar to the following to exploit this vulnerability:<\/a><\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-admin\/admin-ajax.php HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\naction=cc_send_email&amp;cc_email_body=...serialized_object...<\/code><\/pre>\n<p>In the above example, the `serialized_object` is a malicious payload that, when deserialized, could result in <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53518-an-integer-overflow-vulnerability-leading-to-arbitrary-code-execution-in-the-biosig-project-libbiosig\/\"  data-wpil-monitor-id=\"83244\">arbitrary code execution<\/a>.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>While the plugin vendor is working on a patch to address this vulnerability, as a temporary measure, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to detect and block <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1740-excessive-authentication-attempts-vulnerability-in-akinsoft-myrezzta\/\"  data-wpil-monitor-id=\"86754\">attempts to exploit this vulnerability<\/a>. Users are also advised to refrain from clicking suspicious links or downloading suspicious attachments. Regularly updating software and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52122-critical-server-side-template-injection-ssti-vulnerability-in-freeform-plugin-for-craftcms\/\"  data-wpil-monitor-id=\"84045\">plugins can also help in mitigating such vulnerabilities<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity world is in a constant state of flux with new vulnerabilities being discovered regularly. One such vulnerability that has been identified recently is CVE-2025-48101, a high-risk deserialization of untrusted data vulnerability. This flaw is located in the popular WordPress plugin, Constant Contact for WordPress. The vulnerability affects all versions of the plugin [&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-75568","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\/75568","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=75568"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/75568\/revisions"}],"predecessor-version":[{"id":80224,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/75568\/revisions\/80224"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=75568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=75568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=75568"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=75568"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=75568"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=75568"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=75568"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=75568"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=75568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}