CVE-2024-5253: 
WordPress vulnerability analysis and mitigation

The Ultimate Addons for WPBakery plugin for WordPress contains a Stored Cross-Site Scripting vulnerability (CVE-2024-5253) in versions up to and including 3.19.20. The vulnerability exists in the plugin's ult_team shortcode due to insufficient input sanitization and output escaping on user-supplied attributes (NVD).

The vulnerability is classified as a Cross-Site Scripting (CWE-79) issue with a CVSS v3.1 base score of 5.4 (Medium) according to NVD, and 6.4 (Medium) according to Wordfence. The attack vector is network-based (AV:N), with low attack complexity (AC:L), requiring low privileges (PR:L), and user interaction (UI:R). The scope is changed (S:C) with low confidentiality and integrity impacts (C:L, I:L) and no availability impact (A:N) (NVD).

When exploited, this vulnerability allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever a user accesses the compromised page (NVD).

The vulnerability has been patched in version 3.19.20.1. Users are strongly advised to update their Ultimate Addons for WPBakery plugin to the latest version. The update addressed this security bug, with credit given to Wordfence for privately reporting it to the development team (Brainstorm Changelog).