CVE-2026-66578 is a CWE-79 cross-site scripting vulnerability affecting PropertyHive versions up to 2.2.6. It arises from improper neutralization of input during web page generation, enabling an attacker with low privileges to execute scripts in the context of other users. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring privileges and user interaction, with impact on confidentiality, integrity, and availability. No patch or remediation information is provided in the available data.

Successful exploitation could allow an attacker with limited privileges to execute arbitrary scripts in the context of other users, potentially leading to information disclosure, modification of data, or disruption of service. The vulnerability affects confidentiality, integrity, and availability to a limited extent as indicated by the CVSS vector.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict user input where possible and apply web application firewalls or other filtering mechanisms to mitigate potential exploitation.