CVE-2025-11267 is a stored XSS vulnerability in the VK All in One Expansion Unit WordPress plugin affecting all versions up to 9.112.1. It results from improper neutralization of script-related HTML tags (CWE-80) due to inadequate input sanitization and output escaping of the '_veu_custom_css' parameter. Authenticated attackers with Contributor or higher privileges can inject arbitrary scripts that execute in the context of users visiting the injected pages. The vulnerability has a CVSS 3.1 base score of 6.4, reflecting network attack vector, low attack complexity, low privileges required, no user interaction, and impacts on confidentiality and integrity with no availability impact.

An attacker with Contributor-level or higher access can exploit this vulnerability to inject malicious scripts that execute in the browsers of users viewing the affected pages. This can lead to unauthorized actions performed on behalf of users, data theft, or session hijacking. The impact affects confidentiality and integrity but 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 and above to trusted users only. Consider disabling or limiting use of the '_veu_custom_css' parameter if possible. Monitor vendor channels for updates and apply patches promptly once released.