{"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":"CVE-2025-48101: High-Risk Deserialization of Untrusted Data Vulnerability in Constant Contact for WordPress<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

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<\/a>, Constant Contact for WordPress. The 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 vulnerability has the potential<\/a> to impact countless businesses and individuals. The 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

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-48101
\nSeverity: High – CVSS 8.8
\nAttack Vector: Network
\nPrivileges Required: Low
\nUser Interaction: Required
\nImpact: Potential system<\/a> compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Constant Contact for WordPress | n\/a through 4.1.1<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The exploit takes advantage of the deserialization of untrusted data 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 code execution<\/a>, thereby compromising the system or leading to potential data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

An attacker could potentially use a request similar to the following to exploit this vulnerability:<\/a><\/p>\n

POST \/wp-admin\/admin-ajax.php HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\naction=cc_send_email&cc_email_body=...serialized_object...<\/code><\/pre>\n
In the above example, the `serialized_object` is a malicious payload that, when deserialized, could result in arbitrary code execution<\/a>.<\/p>\n
Mitigation<\/strong><\/p>\n
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 attempts to exploit this vulnerability<\/a>. Users are also advised to refrain from clicking suspicious links or downloading suspicious attachments. Regularly updating software and plugins can also help in mitigating such vulnerabilities<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
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 […]<\/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,"_monsterinsights_skip_tracking":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":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t