CVE-2026-65946 is a CWE-79 (Improper Neutralization of Input During Web Page Generation) vulnerability affecting the RO CSVI extension for Joomla by rolandd.com. Specifically, XSS vectors exist in AJAX endpoint handlers in versions 1.0.0 up to and including 9.11.0. This vulnerability allows an attacker to inject malicious scripts into web pages generated by the extension, potentially leading to client-side code execution. No CVSS score or detailed vendor remediation information is currently available.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of a user's browser session when interacting with the affected Joomla extension. This may lead to session hijacking, defacement, or other client-side attacks depending on the victim's privileges and the context of the injected script. There is no evidence of known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch information is provided, users should monitor rolandd.com and Joomla security advisories for updates. Until a fix is available, consider disabling or restricting access to the vulnerable AJAX endpoints if feasible.