CVE-2024-5253 is a stored cross-site scripting vulnerability in the Ultimate Addons for WPBakery plugin for WordPress, specifically in the ult_team shortcode. The issue is due to improper neutralization of input during web page generation, where user-supplied attributes are not adequately sanitized or escaped. Authenticated attackers with contributor-level privileges or higher can exploit this to inject arbitrary JavaScript that executes in the context of users viewing the compromised page. The vulnerability affects all versions up to and including 3.19.20. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges at the contributor level, no user interaction, and partial impact on confidentiality and integrity but no impact on availability.

An attacker with contributor-level access or higher can inject persistent malicious scripts into pages via the ult_team shortcode. These scripts execute in the browsers of users who visit the infected pages, potentially leading to unauthorized actions or data disclosure limited to the scope of the affected site. There is no indication of impact on system availability. The vulnerability does not require user interaction to trigger once the malicious content is injected.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the ult_team shortcode if possible. Monitor for updates from Brainstorm Force regarding patches or official mitigations.