CVE-2026-3911— Org.keycloak.services.resources.admin.userresource: keycloak: information disclosure of disabled user attributes via administrative endpoint
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I. Basic Information for CVE-2026-3911
Vulnerability Information
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Vulnerability Title
Org.keycloak.services.resources.admin.userresource: keycloak: information disclosure of disabled user attributes via administrative endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
侵犯隐私
Source: NVD (National Vulnerability Database)
Vulnerability Title
Keycloak 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Keycloak是Keycloak开源的一种开源身份和访问管理解决方案。 Keycloak存在安全漏洞，该漏洞源于UserResource组件存在漏洞，可能导致具有view-users角色的经过身份验证的用户通过访问特定管理端点不当检索配置为隐藏的用户属性，造成敏感数据泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4.11-1 ~ * | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-14 ~ * | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-14 ~ * | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4.11 | - | cpe:/a:redhat:build_keycloak:26.4::el9 |
II. Public POCs for CVE-2026-3911
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|---|
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IV. Related Vulnerabilities
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V. Comments for CVE-2026-3911
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