CVE-2024-4361 is a stored cross-site scripting vulnerability in the Page Builder by SiteOrigin WordPress plugin affecting all versions up to 2.29.15. The issue occurs due to improper neutralization of input during web page generation, specifically in the 'siteorigin_widget' shortcode, allowing authenticated users with contributor or higher privileges to inject arbitrary scripts. These scripts execute when any user accesses the compromised page, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, and partial impact on confidentiality and integrity.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode. When other users visit these pages, the scripts execute in their browsers, potentially leading to theft of sensitive information or unauthorized actions performed in the context of the victim user. The vulnerability does not affect availability. There are no known exploits in the wild at this time.

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 limiting use of the 'siteorigin_widget' shortcode. Monitor for updates from SiteOrigin regarding patches or official mitigations.