CVE-2021-39211
MediumExploitedStarting in version 9.2 and prior to version 9.5.6, the telemetry endpoint discloses GLPI and server information.
Published Sep 15, 2021 · Updated Aug 7, 2026 · Also known as GHSA-xx66-v3g5-w825, UBUNTU-CVE-2021-39211
Key Facts
Patch immediately- CVE-2021-39211 is a medium-severity vulnerability (CVSS 5.3 v3.1) affecting Glpi (Glpi-Project).
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Sep 15, 2021. No public exploit code is known.
- EPSS estimates a 4.7% probability of exploitation in the next 30 days.
- Fixed versions are available, including Glpi 9.5.6.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS (30-day exploit likelihood)
4.7%
Higher than 91.6% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
None known
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Description
GLPI is a free Asset and IT management software package. Starting in version 9.2 and prior to version 9.5.6, the telemetry endpoint discloses GLPI and server information. This issue is fixed in version 9.5.6. As a workaround, remove the file ajax/telemetry.php, which is not needed for usual functions of GLPI.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Nov 13, 2023 | n/a | Not reported |
| CIRCL KEV | Sep 15, 2021 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| GlpiGlpi-Project | >= >= 9.2, < 9.5.6 | 9.5.6 |
Patched Releases
Glpi
9.5.6
Timeline
Publicly disclosed
Sep 15, 2021
Added to CIRCL KEV
Sep 15, 2021
Added to Industry KEV feed
Nov 13, 2023
Last updated
Aug 7, 2026
Weakness Type
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
- advisoryhttps://github.com/glpi-project/glpi/releases/tag/9.5.6
- advisoryhttps://github.com/glpi-project/glpi/security/advisories/GHSA-xx66-v3g5-w825
- advisoryhttps://ubuntu.com/security/CVE-2021-39211
- advisoryhttps://www.cve.org/CVERecord?id=CVE-2021-39211
- exploitVulnCheck exploitation report
FAQ
Common Questions.
GLPI is a free Asset and IT management software package.
Affected: Glpi (Glpi-Project) versions >= >= 9.2, < 9.5.6. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Sep 15, 2021.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Glpi 9.5.6.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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