CVE-2024-11450 is a stored cross-site scripting vulnerability in the ONLYOFFICE Docs WordPress plugin, specifically in the 'onlyoffice' shortcode. It affects all versions up to and including 2.0.0. The issue is caused by improper neutralization of input during web page generation, where user-supplied shortcode attributes are not properly sanitized or escaped. Authenticated users with contributor-level permissions or higher can exploit this to inject arbitrary JavaScript that executes in the context of other users viewing the page, potentially leading to session hijacking or other script-based attacks. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges, no user interaction, and impacts on confidentiality and integrity with no availability impact.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who view the infected pages, potentially allowing theft of sensitive information or unauthorized actions within the context of the affected site. The impact affects confidentiality and integrity but does not affect availability. There are no reports of active exploitation in the wild.

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 ONLYOFFICE Docs plugin if feasible. Monitor official ONLYOFFICE channels for updates and apply any released patches promptly.