Stored XSS in Wavr WordPress Plugin via `wave` Shortcode

Executive Summary

The Wavr plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in its `wave` shortcode in all versions up to and including 0.2.6. This vulnerability arises because the plugin does not properly sanitize or escape user-supplied attributes. As a result, authenticated users with contributor-level access or higher can inject malicious scripts into pages. These scripts will execute whenever any user accesses the infected page.

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Impact Analysis

This vulnerability can allow attackers with contributor-level access to inject arbitrary malicious scripts into your WordPress site. These scripts can execute in the browsers of users who visit the infected pages, potentially leading to theft of user credentials, session hijacking, defacement, or distribution of malware. Since the attack requires authenticated access, it can be exploited by insiders or compromised accounts.

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Compliance Impact

The vulnerability allows authenticated attackers with contributor-level access to inject arbitrary web scripts via stored cross-site scripting (XSS). This can lead to unauthorized access to user data or session hijacking, potentially compromising confidentiality and integrity of data.

Such security weaknesses can impact compliance with standards like GDPR and HIPAA, which require protection of personal and sensitive data against unauthorized access and breaches.

However, the provided information does not explicitly describe the direct effects on compliance with these regulations.

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