Role-based Access Control Flaw in Keycloak by Red Hat
CVE-2026-17059

6.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak 26.6
Red Hat Build Of Keycloak 26.6.7
Red Hat Data Grid 8
Red Hat Jboss Enterprise Application Platform Expansion Pack
Vendor
CVE Published:
24 July 2026

What is CVE-2026-17059?

A security issue in the Keycloak services library reveals a role-users endpoint flaw, where insufficient permission checks allow unauthorized administrators to access sensitive user data including names and email addresses. This vulnerability highlights a critical oversight in role-based access management, potentially leading to unauthorized data exposure.

Affected Version(s)

Red Hat build of Keycloak 26.6 26.6.7-3

Red Hat build of Keycloak 26.6 26.6-20

Red Hat build of Keycloak 26.6 26.6-20

References

https://access.redhat.com/errata/RHSA-2026:68277
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:68278
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-17059
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Orionexe for reporting this issue.
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