CVE-2025-15643 in Adsmonetizer Plugin
Summary
by MITRE • 10/05/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jose Fernandez Adsmonetizer adsensei-b30 allows Reflected XSS.This issue affects Adsmonetizer: from n/a through 3.2.4.
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Analysis
by VulDB Data Team • 10/05/2026
The identified security flaw represents a classic instance of improper neutralization of input during web page generation, commonly known as Cross-Site Scripting or XSS. Specifically, this vulnerability manifests as a Reflected XSS within the Adsmonetizer plugin for WordPress, affecting versions ranging from n/a through 3.2.4. In a reflected XSS scenario, malicious script payloads are embedded directly into HTTP requests and immediately returned by the web application in an error message, search result, or other response without being properly sanitized or encoded before inclusion in the HTML output. This mechanism allows an attacker to inject client-side scripts that execute within the victim's browser context when they interact with a specially crafted link or form submission directed at the vulnerable Adsmonetizer endpoint.
From a technical perspective, the root cause lies in the failure of the application code to adequately validate and escape user-supplied data before rendering it back to the user interface. When the plugin processes input parameters related to ad placement, configuration settings, or display preferences, it likely concatenates these values directly into HTML structures without applying appropriate encoding functions such as htmlspecialchars() or equivalent sanitization routines in PHP. This lack of output encoding permits special characters like angle brackets and quotation marks to be interpreted by the browser's rendering engine rather than being treated as literal text data. Consequently, any JavaScript code embedded within the input stream is executed with the same privileges as legitimate scripts loaded from the site domain, effectively bypassing the Same-Origin Policy protections that normally isolate web applications from each other.
The operational impact of this vulnerability is significant due to its potential for exploitation through social engineering or automated scanning tools. An attacker can craft a malicious URL containing JavaScript code designed to steal session cookies, capture authentication tokens, perform actions on behalf of the authenticated user, or redirect victims to phishing sites. Since Adsmonetizer deals with advertising integration and monetization settings, compromising an administrator account via this vector could allow the attacker to inject persistent malware into ad slots, deface websites, or exfiltrate sensitive data from users who view the compromised pages. The reflected nature of the attack means that exploitation requires user interaction, typically through a deceptive link shared via email, social media, or other communication channels, making it highly effective in targeted phishing campaigns against site administrators and content creators using this plugin.
This vulnerability aligns with CWE-79, which categorizes improper neutralization of input during web page generation as Cross-site Scripting. It also maps to the MITRE ATT&CK framework under technique T1059, specifically Command and Scripting Interpretation via JavaScript execution in a browser context. The attack vector is classified as Remote (Network) with Low Complexity, indicating that it can be exploited over a network without requiring prior access or complex conditions beyond convincing a user to click a malicious link. Defense-in-depth strategies are essential for mitigating this risk. Immediate remediation involves upgrading the Adsmonetizer plugin to version 3.2.5 or later where the input handling logic has been corrected to properly sanitize and encode all dynamic content before outputting it to the browser. Additionally, implementing Content Security Policy headers can provide an additional layer of defense by restricting the sources from which scripts are allowed to execute, thereby limiting the impact even if a successful injection occurs. Regular security audits and static code analysis should be employed during development to prevent similar input validation failures in future updates.