Executive Summary

This vulnerability is a Stored Cross-site Scripting (XSS) issue in the Pushe Web Push Notification WordPress plugin (versions up to 0.5.0). It allows an attacker with administrator privileges to inject malicious scripts, such as redirects, advertisements, or other HTML payloads, into the website. These scripts execute when visitors access the site, potentially compromising the site's security and user experience. [1]

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Impact Analysis

If exploited, this vulnerability can allow attackers to execute malicious scripts on your website, which can lead to unauthorized redirects, display of unwanted advertisements, or other harmful actions affecting visitors. This can damage your website's reputation, compromise user data, and potentially lead to further security breaches. Since the plugin is abandoned and unpatched, the risk remains unless mitigated by virtual patching or replacing the plugin. [1]

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Detection Guidance

Detection of this vulnerability involves checking if the Pushe Web Push Notification plugin version 0.5.0 or earlier is installed and active on your WordPress site. Since the vulnerability allows an attacker with administrator privileges to inject malicious scripts, monitoring for unexpected or suspicious scripts in web pages served by your site can help detect exploitation. However, plugin-based malware scanners may be unreliable due to tampering. It is recommended to perform server-side malware scanning and seek professional incident response. Specific commands are not provided in the available resources. [1]

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Mitigation Strategies

Immediate mitigation steps include removing and replacing the vulnerable Pushe Web Push Notification plugin, as no official fix or updated version is available. Applying a virtual patch (vPatch) provided by Patchstack can offer rapid protection without requiring an official patch. Deactivating the plugin alone does not eliminate the security risk. Additionally, seeking professional incident response and performing server-side malware scanning is advised if compromise is suspected. [1]

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