CVE-2016-1566: Apache Guacamole

Medium severity, CVSS 5.4. EPSS: 2.2% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in the file browser in Guacamole 0.9.8 and 0.9.9, when file transfer is enabled to a location shared by multiple users, allows remote authenticated users to inject arbitrary web script or HTML via a crafted filename. NOTE: this vulnerability was fixed in guacamole.war on 2016-01-13, but the version number was not changed.

Affected products

• Apache Guacamole: version 0.9.8 only; version 0.9.9 only

Published 2017-02-02. Last modified 2026-06-17.