CVE-2021-21312

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.

• CWE-79

• https://github.com/glpi-project/glpi/releases/tag/9.5.4Release Notes, Third Party Advisory
• https://github.com/glpi-project/glpi/security/advisories/GHSA-c7f6-3mr7-3rq2Third Party Advisory
• https://github.com/glpi-project/glpi/releases/tag/9.5.4Release Notes, Third Party Advisory
• https://github.com/glpi-project/glpi/security/advisories/GHSA-c7f6-3mr7-3rq2Third Party Advisory

Published

Mar 3, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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