Executive Summary

The vulnerability exists in the Team Master – A Modern WordPress Team Showcase plugin for WordPress, affecting all versions up to and including 1.1.2.

It is a Stored Cross-Site Scripting (XSS) vulnerability that occurs via shortcode attributes due to insufficient input sanitization and output escaping.

This allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages, which execute whenever a user accesses the injected page.

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Impact Analysis

This vulnerability can allow an attacker with contributor-level access or above to inject malicious scripts into website pages.

When other users visit these pages, the injected scripts will execute in their browsers, potentially leading to theft of sensitive information, session hijacking, or other malicious actions.

The CVSS score of 6.4 indicates a medium severity with network attack vector, low attack complexity, and no user interaction required.

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Mitigation Strategies

To mitigate this vulnerability, you should update the Team Master – A Modern WordPress Team Showcase plugin to a version later than 1.1.2 where the issue is fixed.

Additionally, restrict contributor-level access and above to trusted users only, as the vulnerability requires authenticated users with at least contributor privileges to exploit.

Implement input sanitization and output escaping best practices if you maintain custom code interacting with this plugin.

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