CVE-2026-75955 is a reflected XSS and XML injection vulnerability in the J-BusinessDirectory extension for Joomla by cmsjunkie.com. Specifically, in versions 1.0.0 through 6.2.2, the companyName parameter from user requests is inserted into an XML attribute without proper escaping, leading to improper neutralization of input (CWE-79). This flaw could allow an attacker to inject malicious scripts via crafted input that is reflected in the web page generation process.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to session hijacking, defacement, or other client-side attacks. The CVSS 4.0 base score is 5.1 (medium severity), indicating a moderate risk with network attack vector, low attack complexity, no privileges required, user interaction required, and limited impact on integrity and availability.

No explicit patch or official fix information is provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider applying input validation or escaping controls on the companyName parameter to mitigate injection risks.