CVE-2020-27838
Last modified
CVE-2020-27838 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 17.94% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Keycloak | < 13.0.0 |
| Redhat | Single Sign-On | 7.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1906797Issue Tracking, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1906797Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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