CVE-2026-73190 in WPDM Premium Packages Plugin
Summary
by MITRE • 08/18/2026
Unauthenticated Cross Site Scripting (XSS) in WPDM – Premium Packages <= 7.0.5 versions.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 08/18/2026
The vulnerability identified as an unauthenticated cross-site scripting flaw within the WordPress Download Manager plugin, specifically affecting versions up to and including 7.0.5, represents a significant security risk for websites relying on this software for file distribution. This type of attack allows malicious actors to inject client-side scripts into web pages viewed by other users without requiring any form of authentication or prior login credentials. The absence of an access control requirement means that the vulnerability can be exploited by anyone with network connectivity to the target application, drastically lowering the barrier to entry for attackers and increasing the likelihood of successful exploitation in automated campaigns targeting vulnerable WordPress installations.
From a technical perspective, this flaw typically stems from insufficient input validation or improper output encoding when handling user-supplied data within the plugin's frontend interface. When the application processes requests containing malicious script payloads, it fails to sanitize these inputs before rendering them in the browser context of legitimate users. This allows attackers to execute arbitrary JavaScript code in the victim's web browser, which operates under the same origin policy as the vulnerable website. The specific vectors for this injection often involve parameters passed via HTTP GET or POST requests that are reflected directly into HTML responses without adequate encoding mechanisms such as HTML entity encoding or context-aware escaping.
The operational impact of exploiting an unauthenticated XSS vulnerability is multifaceted and can lead to severe compromises in data integrity, confidentiality, and availability. Attackers can use the injected scripts to steal session cookies, thereby hijacking administrative sessions if a user with elevated privileges visits the compromised page. This capability effectively bypasses authentication mechanisms by stealing valid credentials or tokens. Furthermore, attackers may redirect users to phishing sites designed to harvest sensitive information such as login credentials for other services, install malware on victim systems through drive-by downloads, or deface the website's appearance. In enterprise environments, this can lead to significant reputational damage and loss of customer trust due to perceived insecurity.
This vulnerability aligns with CWE-79, which categorizes improper neutralization of input during web page generation as a classic cross-site scripting weakness. It also maps closely to MITRE ATT&CK technique T1059.007, specifically JavaScript execution within the browser environment. The unauthenticated nature of this flaw places it in high-severity categories because it does not require privilege escalation or complex social engineering beyond luring users to a crafted URL. Security researchers emphasize that such vulnerabilities are often exploited as part of broader attack chains involving credential harvesting and subsequent lateral movement within compromised networks.
To mitigate this risk, immediate action is required by updating the WordPress Download Manager plugin to version 7.0.6 or later where these input validation issues have been addressed. Administrators should ensure that all plugins are kept up-to-date with the latest security patches released by vendors. Additionally, implementing a Web Application Firewall can provide an additional layer of defense by filtering out malicious payloads before they reach the application logic. Security best practices also dictate enabling Content Security Policy headers to restrict the sources from which scripts can be loaded and executed, thereby limiting the impact even if an injection attempt occurs. Regular security audits and code reviews focusing on input sanitization and output encoding are essential for maintaining robust defenses against such client-side attacks.