CVE-2020-11036

In GLPI before version 9.4.6 there are multiple related stored XSS
vulnerabilities. The package is vulnerable to Stored XSS in the comments of
items in the Knowledge base. Adding a comment with content
“<script>alert(1)</script>” reproduces the attack. This can be exploited by
a user with administrator privileges in the User-Agent field. It can also
be exploited by an outside party through the following steps: 1. Create a
user with the surname " onmouseover="alert(document.cookie) and an empty
first name. 2. With this user, create a ticket 3. As an administrator (or
other privileged user) open the created ticket 4. On the “last update”
field, put your mouse on the name of the user 5. The XSS fires This is
fixed in version 9.4.6.