GitHub Advisoryadvisory · Maven
GHSA-933f-rg6j-f46p Keycloak Account Resources user lookup contains broken access control
MEDIUM
Official page ↗
- Aliases
- CVE-2026-37981
- Ecosystem
- Maven
- Packages
- org.keycloak:keycloak-services
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-1220
- Reviewed
- 2026-06-30
Affected packages
• Maven org.keycloak:keycloak-services: < 26.4.12 → fixed in 26.4.12
• Maven org.keycloak:keycloak-services: >= 26.5.0, < 26.6.2 → fixed in 26.6.2
Description
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.
Related
Alias · CVE (1)
- CVE-2026-37981 A flaw was found in Keycloak. vulnerability
Weakness · CWE (1)
- CWE-1220 Insufficient Granularity of Access Control weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-37981 advisory
- https://github.com/keycloak/keycloak/issues/49116 web
- https://github.com/keycloak/keycloak/pull/49122 web
- https://github.com/keycloak/keycloak/commit/33f6f873fda2c9546e52d34b4f865eafc42df0c0 web
- https://github.com/keycloak/keycloak/commit/b68070bcf96a6fe7d0f01cee5d3cbde71f2abbe7 web
- https://access.redhat.com/errata/RHSA-2026:19596 web
- https://access.redhat.com/errata/RHSA-2026:19597 web
- https://access.redhat.com/security/cve/CVE-2026-37981 web
- https://bugzilla.redhat.com/show_bug.cgi?id=2455326 web
- https://github.com/keycloak/keycloak package