PatchSiren cyber security CVE debrief
CVE-2026-9088 Red Hat CVE debrief
A flaw was found in org.keycloak.services. An administrator with delegated access to read group memberships and users can bypass user profile permissions by accessing the group members endpoint. This allows the administrator to view user attributes that are explicitly configured to be denied, leading to information disclosure.
- Vendor
- Red Hat
- Product
- Red Hat build of Keycloak 26.6
- CVSS
- LOW 2.7
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-05
- Original CVE updated
- 2026-06-10
- Advisory published
- 2026-06-05
- Advisory updated
- 2026-06-10
Who should care
Administrators and users of Keycloak services should be aware of this vulnerability and take necessary actions to mitigate it.
Technical summary
The vulnerability has a CVSS score of 2.7 and is classified as LOW severity. It can be exploited by an administrator with high privileges, and it allows unauthorized access to sensitive user information.
Defensive priority
Low
Recommended defensive actions
- Apply patches or updates provided by the vendor to fix the vulnerability.
- Restrict access to the group members endpoint to prevent unauthorized access.
- Monitor user profile permissions and ensure that sensitive attributes are properly configured.
Evidence notes
The vulnerability was reported by Redhat and has been documented in their security advisories.
Official resources
CVE-2026-9088 was published on 2026-06-05T08:16:30.990Z and modified on 2026-06-10T22:17:03.250Z.