In GLPI before verison 9.5.4, there is a vulnerability within the document upload function (Home > Management > Documents > Add, or /front/document.form.php endpoint), indeed one of the form field: "Web Link" is not properly sanitized and a malicious user (who has document upload rights) can use it to deliver JavaScript payload. For example if you use the following payload: " accesskey="x" onclick="alert(1)" x=", the content will be saved within the database without any control. And then once you return to the summary documents page, by clicking on the "Web Link" of the newly created file it will create a new empty tab, but on the initial tab the pop-up "1" will appear.
External References: https://github.com/glpi-project/glpi/releases/tag/9.5.4 https://github.com/glpi-project/glpi/security/advisories/GHSA-c7f6-3mr7-3rq2
Created glpi tracking bugs for this issue: Affects: epel-7 [bug 1942570] Affects: fedora-32 [bug 1942569]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.