Information Disclosure Vulnerability in Keycloak by Red Hat
CVE-2026-3911
2.7LOW
What is CVE-2026-3911?
A flaw exists in Keycloak that allows authenticated users with the view-users role to exploit a weakness in the UserResource component. By accessing a specific administrative endpoint, these users can improperly retrieve hidden user attributes. This creates a risk of unauthorized access to sensitive user information, potentially exposing critical data. Organizations using Keycloak should evaluate their configurations and implement necessary security measures to mitigate this risk.
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References
CVSS V3.1
Score:
2.7
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged
Timeline
Vulnerability published
Vulnerability Reserved
Credit
Red Hat would like to thank drak3hft7 for reporting this issue.