CVE-2023-0165: 
WordPress vulnerability analysis and mitigation

The Cost Calculator WordPress plugin (version 1.8 and earlier) contains a stored Cross-Site Scripting (XSS) vulnerability identified as CVE-2023-0165. The vulnerability was publicly disclosed on February 13, 2023. The issue affects the nd-projects plugin, specifically related to insufficient validation and escaping of shortcode attributes (WPScan).

The vulnerability stems from the plugin's failure to properly validate and escape certain shortcode attributes before outputting them back in a page or post where the shortcode is embedded. The vulnerability has been assigned a CVSS score of 6.8 (medium severity) and is classified under CWE-79. A proof of concept exploit involves using malicious shortcode attributes: [nd_cost_calculator id='" onmouseover="alert(1)" style="background:red;"'] (WPScan).

This vulnerability could allow users with contributor-level privileges or higher to perform Stored Cross-Site Scripting attacks. When successfully exploited, attackers can inject malicious JavaScript code that executes in visitors' browsers when viewing affected pages (WPScan).

No known fix has been reported for this vulnerability. Site administrators should consider either removing the plugin or implementing additional security controls to restrict access to shortcode usage (WPScan).