CVE-2021-39209: Bypassable CSRF protection

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-15 · updated 2026-06-17
Weakness: CWE-352

Description

GLPI is a free Asset and IT management software package. In versions prior to 9.5.6, a user who is logged in to GLPI can bypass Cross-Site Request Forgery (CSRF) protection in many places. This could allow a malicious actor to perform many actions on GLPI. This issue is fixed in version 9.5.6. There are no workarounds aside from upgrading.

Affected products

glpi-project glpi: before 9.5.6 — fixed in 9.5.6

How to fix

Upgrade to a fixed version: glpi-project glpi 9.5.6. Check the vendor advisory for mitigations.

References

https://github.com/glpi-project/glpi/releases/tag/9.5.6
https://github.com/glpi-project/glpi/security/advisories/GHSA-5qpf-32w7-c56p
https://github.com/glpi-project/glpi/releases/tag/9.5.6
https://github.com/glpi-project/glpi/security/advisories/GHSA-5qpf-32w7-c56p

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