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GHSA-pcv5-m2wh-66j3

Keycloak discloses information without authentication

Source: GitHub Advisory Database (reviewed) Moderate CVE-2020-27838

Packages

EcosystemPackageAffectedFixed in
Maven org.keycloak:keycloak-core < 13.0.0 13.0.0

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.