CVE-2026-9088
Keycloak: keycloak: information disclosure due to user profile permission bypass
CVSS Score
2.7
EPSS Score
0.3%
EPSS Percentile
24th
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.
| CWE | CWE-1220 |
| Vendor | red hat |
| Product | red hat build of keycloak 26.4 |
| Published | Jun 5, 2026 |
| Last Updated | Jun 26, 2026 |
Stay Ahead of the Next One
Get instant alerts for red hat red hat build of keycloak 26.4
Be the first to know when new low vulnerabilities affecting red hat red hat build of keycloak 26.4 are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
Red Hat / Red Hat build of Keycloak 26.4
All versions affected Red Hat / Red Hat build of Keycloak 26.4
All versions affected Red Hat / Red Hat build of Keycloak 26.4
All versions affected Red Hat / Red Hat build of Keycloak 26.4.13
All versions affected Red Hat / Red Hat build of Keycloak 26.6
All versions affected Red Hat / Red Hat build of Keycloak 26.6
All versions affected Red Hat / Red Hat build of Keycloak 26.6
All versions affected Red Hat / Red Hat build of Keycloak 26.6.3
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25097 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25098 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:30049 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:30050 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-9088 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2480179
Credits
Red Hat would like to thank Hadley So for reporting this issue.