CVE-2026-62127 in Info Card Plugin
Summary
by MITRE • 10/08/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in MediaRon LLC WP Plugin Info Card wp-plugin-info-card allows Stored XSS.This issue affects WP Plugin Info Card: from n/a through 6.3.5.
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Analysis
by VulDB Data Team • 10/08/2026
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 Stored XSS within the WP Plugin Info Card plugin developed by MediaRon LLC. Unlike reflected XSS attacks where malicious scripts are executed immediately upon user interaction with a crafted link, stored vulnerabilities persist on the target server. In this context, an attacker can inject malicious JavaScript code into input fields that are subsequently saved to the database and rendered in web pages for other users without proper sanitization or encoding. This persistence mechanism significantly amplifies the severity of the vulnerability because the payload does not require complex social engineering to trigger; it executes automatically whenever a victim visits a page containing the compromised data, thereby increasing the likelihood of successful exploitation across multiple sessions and user accounts.
The technical root cause lies in the insufficient validation and sanitization of user-supplied input before it is processed by the application's backend logic or displayed on frontend pages. When users interact with features such as plugin reviews, descriptions, or configuration settings within WP Plugin Info Card versions ranging from n/a through 6.3.5, the system fails to strip out potentially executable script tags or event handlers like onload or onclick. Consequently, when this tainted data is retrieved and rendered in a browser context, the web page treats the injected content as legitimate code rather than plain text. This failure adheres closely to CWE-79, which defines Cross-site Scripting (XSS) as an attack where attackers inject client-side scripts into web pages viewed by other users. The lack of output encoding ensures that the browser's parser interprets these injections as executable commands, allowing for arbitrary code execution within the context of the vulnerable website.
The operational impact of this vulnerability is substantial, primarily due to its stored nature and potential scope. An attacker who successfully exploits this flaw can execute scripts in the browsers of any user viewing the affected pages. This capability enables a range of malicious activities including session hijacking, where the attacker steals authentication cookies or tokens to impersonate legitimate users; credential harvesting by creating fake login forms that capture usernames and passwords; and defacement of website content. Furthermore, if the compromised account possesses administrative privileges, which is common in WordPress environments, the impact escalates to full site compromise. The attacker could install additional malware, create backdoors for persistent access, or use the server as a pivot point for further network attacks. This aligns with MITRE ATT&CK techniques such as T1059 Command and Scripting Interpretation via JavaScript in web browsers and potentially T1078 Valid Accounts if session tokens are stolen to gain unauthorized access.
To mitigate this vulnerability, immediate action is required by updating the WP Plugin Info Card plugin to a version later than 6.3.5 where these input handling issues have been addressed. Developers must implement robust input validation on all entry points and enforce strict output encoding based on the context in which data is rendered, such as HTML entity encoding for body content or attribute escaping for attributes. Additionally, implementing Content Security Policy headers can provide a layer of defense by restricting the sources from which scripts are allowed to load, thereby mitigating the impact even if an XSS vector exists. For system administrators, regular auditing of plugin code and employing Web Application Firewalls that detect common XSS patterns can offer supplementary protection against exploitation attempts while patches are being deployed across affected environments.