CVE-2026-15945— Keycloak-services: keycloak-services: group hierarchy search discloses hidden parent groups under fgap v2
Quick assessment
Affected
Red Hat Red Hat build of Keycloak 26.6
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Keycloak是Keycloak组织开源的一种身份和访问管理解决方案。 Keycloak存在授权问题漏洞，该漏洞源于组搜索功能问题，当启用Fine-Grained Admin Permissions (FGAP) v2时，授权的管理员可以绕过访问限制查看未授权的父组，导致敏感组属性和配置泄露。
Affected Version Matrix 9
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.6 | 26.6.7-3< * |
unaffected |
26.6-20< * |
unaffected | ||
26.6-20< * |
unaffected | ||
| Red Hat | Red Hat build of Keycloak 26.6.7 | any |
unaffected |
any |
unaffected | ||
any |
unaffected | ||
| Red Hat | Red Hat Data Grid 8 | any |
affected |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | any |
affected |
| Red Hat | Red Hat Single Sign-On 7 | any |
affected |
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I. Basic Information for CVE-2026-15945
Vulnerability Information
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Vulnerability Title
Keycloak-services: keycloak-services: group hierarchy search discloses hidden parent groups under fgap v2
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the group search functionality of the Keycloak server's administrative API. When Fine-Grained Admin Permissions (FGAP) v2 is enabled, a delegated administrator can bypass access restrictions to view parent groups they are not authorized to see. By searching for a child group they have permission to view, the system incorrectly returns the full details of the parent group in the response, leading to the disclosure of sensitive group attributes and configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Keycloak 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Keycloak是Keycloak组织开源的一种身份和访问管理解决方案。 Keycloak存在授权问题漏洞，该漏洞源于组搜索功能问题，当启用Fine-Grained Admin Permissions (FGAP) v2时，授权的管理员可以绕过访问限制查看未授权的父组，导致敏感组属性和配置泄露。
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 26.6 | 26.6.7-3 ~ * |
cpe:/a:redhat:build_keycloak:26.6::el9
|
|
| Red Hat | Red Hat build of Keycloak 26.6 | 26.6-20 ~ * |
cpe:/a:redhat:build_keycloak:26.6::el9
|
|
| Red Hat | Red Hat build of Keycloak 26.6 | 26.6-20 ~ * |
cpe:/a:redhat:build_keycloak:26.6::el9
|
|
| Red Hat | Red Hat build of Keycloak 26.6.7 | - |
cpe:/a:redhat:build_keycloak:26.6::el9
|
|
| Red Hat | Red Hat build of Keycloak 26.6.7 | - |
cpe:/a:redhat:build_keycloak:26.6::el9
|
|
| Red Hat | Red Hat build of Keycloak 26.6.7 | - |
cpe:/a:redhat:build_keycloak:26.6::el9
|
|
| Red Hat | Red Hat Data Grid 8 | - |
cpe:/a:redhat:jboss_data_grid:8
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | - |
cpe:/a:redhat:jbosseapxp
|
|
| Red Hat | Red Hat Single Sign-On 7 | - |
cpe:/a:redhat:red_hat_single_sign_on:7
|
|
II. Public POCs for CVE-2026-15945
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-15945 (4)
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-
-
-
🔗 RHSA-2026:68278 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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V. Comments for CVE-2026-15945
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