CVE

CVE-2020-27838

6.5

CVSS

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.

Attack Vector

Privileges Req.

User Interaction

keycloak

Updated Oct 24, 2026View on NVD →

S4E scanner

mediumProduct Based Web Vulnerabilities~10 seconds

CVE-2020-27838 Scanner

CVE-2020-27838 Scanner - Information Disclosure vulnerability in KeyCloak

Used 2.8k times · 3.4k assets checked · url

Scanner page →Run scanner

Monitor this CVE on your assets

S4E maps published CVEs to scanners and forecasts the next disclosure window for your stack.

Create a free account →