CVE-2020-27838
Keycloak discloses information without authentication
6.5
MEDIUM
CVSS 3.1
EPSS 85.1%
Description
A flaw was found in keycloak in versions prior to 13.0.0. The client registration endpoint allows fetching information about PUBLIC clients (like client secret) without authentication which could be an issue if the same PUBLIC client changed to CONFIDENTIAL later. The highest threat from this vulnerability is to data confidentiality.
How to fix CVE-2020-27838
To remediate CVE-2020-27838, upgrade the affected package to a fixed version below.
- —upgrade to 13.0.0 or later
Is CVE-2020-27838 being exploited?
Likely — EPSS is 85.1%, placing CVE-2020-27838 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
- from 0, < 13.0.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |