CVE-2021-21313

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 in the /ajax/common.tabs.php endpoint, indeed, at least two parameters _target and id are not properly sanitized. Here are two payloads (due to two different exploitations depending on which parameter you act) to exploit the vulnerability:/ajax/common.tabs.php?_target=javascript:alert(document.cookie)&_itemtype=DisplayPreference&_glpi_tab=DisplayPreference$2&id=258&displaytype=Ticket (Payload triggered if you click on the button). /ajax/common.tabs.php?_target=/front/ticket.form.php&_itemtype=Ticket&_glpi_tab=Ticket$1&id=(){};(function%20(){alert(document.cookie);})();function%20a&#.

• CWE-74
• 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-h4hj-mrpg-xfgxThird 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-h4hj-mrpg-xfgxThird 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.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-21308PrestaShop is a fully scalable open source e-commerce soluti…9.1
• CVE-2021-21309Redis is an open-source, in-memory database that persists on…8.8
• CVE-2021-2131Vulnerability in the Oracle VM VirtualBox product of Oracle …6
• CVE-2021-21310NextAuth.js (next-auth) is am open source authentication sol…5.9
• CVE-2021-21311Adminer is an open-source database management in a single PH…7.2
• CVE-2021-21312GLPI is open source software which stands for Gestionnaire L…4.8
• CVE-2021-21314GLPI is open source software which stands for Gestionnaire L…4.8
• CVE-2021-21315The System Information Library for Node.JS (npm package "sys…7.8
• CVE-2021-21316less-openui5 is an npm package which enables building OpenUI…7.8
• CVE-2021-21317uap-core in an open-source npm package which contains the co…5.3
• CVE-2021-21318Opencast is a free, open-source platform to support the mana…5.4
• CVE-2021-21319Galette is a membership management web application geared to…5.4