MEDIUM4.3
GHSA-933f-rg6j-f46p
Keycloak Account Resources user lookup contains broken access control
Quick fix
GHSA-933f-rg6j-f46p — org.keycloak:keycloak-services: upgrade to the fixed version with the command below.
# pom.xml: bump <version>26.4.12</version> for org.keycloak:keycloak-servicesDetails
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.
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Affected packages
Maven/org.keycloak:keycloak-services
Introduced in:
0Fixed in: 26.4.12Fix
# pom.xml: bump <version>26.4.12</version> for org.keycloak:keycloak-servicesMaven/org.keycloak:keycloak-services
Introduced in:
26.5.0Fixed in: 26.6.2Fix
# pom.xml: bump <version>26.6.2</version> for org.keycloak:keycloak-servicesReferences
- 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]