CVE-2023-5705: 
WordPress vulnerability analysis and mitigation

The VK Filter Search plugin for WordPress contains a Stored Cross-Site Scripting vulnerability (CVE-2023-5705) affecting all versions up to and including 2.3.1. The vulnerability was discovered in the plugin's 'vk_filter_search' shortcode functionality and was disclosed on October 25, 2023 (Wordfence).

The vulnerability stems from insufficient input sanitization and output escaping on user-supplied attributes in the 'vk_filter_search' shortcode. The issue has been assigned a CVSS v3.1 base score of 5.4 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N (NVD).

When exploited, this vulnerability allows authenticated attackers with contributor-level permissions or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever a user accesses an affected page, potentially compromising the security of site visitors (NVD).

The vulnerability requires an authenticated user with at least contributor-level access to exploit. The attack vector is network-accessible, requires low attack complexity, and needs user interaction for successful exploitation (NVD).

A patch has been released to address this vulnerability. Website administrators should update the VK Filter Search plugin to a version newer than 2.3.1 (WordPress).