CVE-2021-21258

Name: CVE-2021-21258
Creator: NVD / NIST
Published: 2021-03-02T20:15:14.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2021-21258 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI from version 9.5.0 and before version 9.5.4, there is a cross-site scripting injection vulnerability when using ajax/kanban.php. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI from version 9.5.0 and before version 9.5.4, there is a cross-site scripting injection vulnerability when using ajax/kanban.php. This is fixed in version 9.5.4.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.65%

46.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Glpi-Project	Glpi	>= 9.5.0, < 9.5.4

References

https://github.com/glpi-project/glpi/commit/e7802fc051696de1f76108ea8dc3bd4e2c880f15Patch, Third Party Advisory
https://github.com/glpi-project/glpi/security/advisories/GHSA-j4xj-4qmc-mmmxThird Party Advisory
https://github.com/glpi-project/glpi/commit/e7802fc051696de1f76108ea8dc3bd4e2c880f15Patch, Third Party Advisory
https://github.com/glpi-project/glpi/security/advisories/GHSA-j4xj-4qmc-mmmxThird Party Advisory

Timeline

Published: Mar 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21258?

How severe is CVE-2021-21258?

CVE-2021-21258 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21258?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21258?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST