low2.7
CVE-2026-3911
Keycloak: Information disclosure of disabled user attributes via administrative endpoint
Impact
A flaw was found in Keycloak. An authenticated user with the view-users role could exploit a vulnerability in the UserResource component. By accessing a specific administrative endpoint, this user could improperly retrieve user attributes that were configured to be hidden. This unauthorized information disclosure could expose sensitive user data.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-services | <= 26.5.5 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Redhat | Build Of Keycloak | All versions Versions 26.4, 26.4.11 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://access.redhat.com/errata/RHSA-2026:6477
- https://access.redhat.com/errata/RHSA-2026:6478
- https://access.redhat.com/security/cve/CVE-2026-3911
- https://bugzilla.redhat.com/show_bug.cgi?id=2446392
- https://github.com/advisories/GHSA-xh32-c9wx-phrp
- https://nvd.nist.gov/vuln/detail/CVE-2026-3911
- https://github.com/keycloak/keycloak/issues/46922
- https://github.com/keycloak/keycloak/pull/46923
- https://github.com/keycloak/keycloak/commit/215bc1e27230f2a66670ed70262248b5f5254eb9