CVE-2021-21314: XSS injection on ticket update

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-03 · updated 2026-06-17
Weakness: CWE-79

Description

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 an XSS vulnerability involving a logged in user while updating a ticket.

Affected products

glpi-project glpi: before 9.5.4 — fixed in 9.5.4

How to fix

Upgrade to a fixed version: glpi-project glpi 9.5.4. Check the vendor advisory for mitigations.

References

https://github.com/glpi-project/glpi/releases/tag/9.5.4
https://github.com/glpi-project/glpi/security/advisories/GHSA-2w7j-xgj7-3xgg
https://github.com/glpi-project/glpi/releases/tag/9.5.4
https://github.com/glpi-project/glpi/security/advisories/GHSA-2w7j-xgj7-3xgg

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