CVE-2021-39213

Name: CVE-2021-39213
Creator: NVD / NIST
Published: 2021-09-15T17:15:10.337+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.01%

Last modified Jun 17, 2026

CVE-2021-39213 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. GLPI is a free Asset and IT management software package. Starting in version 9.1 and prior to version 9.5.6, GLPI with API Rest enabled is vulnerable to API bypass with custom header injection. EPSS estimates a 1.01% chance of exploitation in the next 30 days.

Description

GLPI is a free Asset and IT management software package. Starting in version 9.1 and prior to version 9.5.6, GLPI with API Rest enabled is vulnerable to API bypass with custom header injection. This issue is fixed in version 9.5.6. One may disable API Rest as a workaround.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.01%

58.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Glpi-Project	Glpi	>= 9.1, < 9.5.6

References

https://github.com/glpi-project/glpi/releases/tag/9.5.6Release Notes, Third Party Advisory
https://github.com/glpi-project/glpi/security/advisories/GHSA-6w9f-2m6g-5777Third Party Advisory
https://github.com/glpi-project/glpi/releases/tag/9.5.6Release Notes, Third Party Advisory
https://github.com/glpi-project/glpi/security/advisories/GHSA-6w9f-2m6g-5777Third Party Advisory

Timeline

Published: Sep 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39213?

How severe is CVE-2021-39213?

CVE-2021-39213 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39213?

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-2021-39213?

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

Scan your code now

Source: NVD / NIST