WP BookWidgets Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the WP BookWidgets plugin for WordPress, affecting all versions through 0.9. This vulnerability arises from inadequate input sanitization and output escaping of user-supplied attributes in the 'bw_link' shortcode. As a result, authenticated attackers with contributor-level access or higher can inject arbitrary web scripts into pages, which will execute when users access the compromised 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 'bw_link' shortcode to inject a script. The lack of proper sanitization and escaping allows the script to be executed when the page is viewed.

Remediation

No known patch is available for this vulnerability. Users are advised to review the vulnerability details and consider uninstalling the affected plugin.