GHSA-933f-rg6j-f46p
Keycloak Account Resources user lookup contains broken access control
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | org.keycloak:keycloak-services | < 26.4.12 | 26.4.12 |
| Maven | org.keycloak:keycloak-services | >= 26.5.0, < 26.6.2 | 26.6.2 |
Details
As written in the advisory (Markdown source, shown as plain text).
Keycloak's Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access (UMA) resource, to enumerate and harvest personally identifiable information (PII) for all realm users. By sending crafted requests with arbitrary usernames or email values, the endpoint returns full profile objects for unrelated users. This leads to broad profile-level information disclosure.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2026-37981
- https://github.com/keycloak/keycloak/issues/49116
- https://github.com/keycloak/keycloak/pull/49122
- https://github.com/keycloak/keycloak/commit/33f6f873fda2c9546e52d34b4f865eafc42df0c0
- https://github.com/keycloak/keycloak/commit/b68070bcf96a6fe7d0f01cee5d3cbde71f2abbe7
- https://access.redhat.com/errata/RHSA-2026:19596
- https://access.redhat.com/errata/RHSA-2026:19597
- https://access.redhat.com/security/cve/CVE-2026-37981
- https://bugzilla.redhat.com/show_bug.cgi?id=2455326
- https://github.com/keycloak/keycloak