What is CVE-2020-27663?

CVE-2020-27663 is a medium-severity vulnerability in Glpi-Project Glpi, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2020-11-26.

How severe is CVE-2020-27663?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2020-27663 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Glpi-Project Glpi

CVE-2020-27663

In GLPI before 9.5.3, ajax/getDropdownValue.php has an Insecure Direct Object Reference (IDOR) vulnerability that allows an attacker to read data from any itemType (e.g., Ticket, Users, etc.).

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2020-11-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.3th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Glpi-Project Glpi

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

Public proof-of-concept exploits

References

github.com/glpi-project/glpi/security/advisories/GHSA-pqfv-4pvr-55r4 (Third Party Advisory)

Frequently asked questions

What is CVE-2020-27663?: CVE-2020-27663 is a medium-severity vulnerability in Glpi-Project Glpi, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2020-11-26.
How severe is CVE-2020-27663?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2020-27663 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.