CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NCVE-2020-27838
Medium (6.5) in redhat. EPSS 18% chance of exploitation in the next 30 days. Fixed in org.keycloak:keycloak-core 13.0.0.
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.
Severity
- EPSS
- 18% chance of exploitation in the next 30 days; higher than 97% of CVEs (scores of 2026-11-01)
- CWE
- CWE-287
- Published
- Modified
- Record from
- the NVD, synced
Affected
- redhat:keycloak
- redhat:single_sign-on
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-pcv5-m2wh-66j3 | Maven | org.keycloak:keycloak-core | <13.0.0 | 13.0.0 |