Cross-site Scripting (XSS) Affecting glpi package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.32% (55th percentile)

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  • Snyk IDSNYK-UBUNTU1604-GLPI-1124878
  • published1 Jun 2025
  • disclosed3 Mar 2021

Introduced: 3 Mar 2021

CVE-2021-21312  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:16.04 glpi.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glpi package and not the glpi package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

GLPI is open source software which stands for Gestionnaire Libre de Parc Informatique and it is a Free Asset and IT Management Software package. 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.

CVSS Base Scores

version 3.1