CVE-2024-2839 is a stored cross-site scripting vulnerability in the Colibri Page Builder WordPress plugin. It arises from improper neutralization of input in the 'colibri_post_title' shortcode, specifically the 'heading_type' attribute, allowing authenticated contributors or higher to inject arbitrary JavaScript. This script executes in the context of users viewing the injected page, potentially compromising user sessions or data. The vulnerability affects all plugin versions up to 1.0.263. No patch or official fix has been documented yet.

An attacker with contributor-level or higher privileges can inject persistent malicious scripts into pages via the vulnerable shortcode attribute. These scripts execute in the browsers of users who view the compromised pages, potentially leading to session hijacking or other client-side impacts. The vulnerability does not affect availability and requires authenticated access, limiting its scope. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict contributor-level access to trusted users only and consider disabling or limiting use of the 'colibri_post_title' shortcode. Monitor official vendor channels for updates and apply any released patches promptly.