Simple Football Scoreboard WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Simple Football Scoreboard plugin for WordPress, affecting all versions through 1.0. The issue arises from inadequate input sanitization and output escaping of user-supplied attributes in the 'ytmr_fb_scoreboard' shortcode. This vulnerability allows authenticated attackers with Contributor-level access and above to inject arbitrary web scripts into pages, which are executed when users access the affected page.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Reproduction

To reproduce this vulnerability, an authenticated user with Contributor-level access or higher can use the 'ytmr_fb_scoreboard' shortcode. The absence of proper input sanitization and output escaping on the shortcode's attributes enables the injection of malicious scripts. Once injected, these scripts will execute whenever the page is accessed.

Remediation

No known patch is available for this vulnerability. It is recommended to review the vulnerability details and consider uninstalling the affected plugin.