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CVE-2026-9088— Keycloak: keycloak: information disclosure due to user profile permission bypass

CVSS 2.7 · Low EPSS 0.32% · P23

Possible ATT&CK Techniques 1AI

T1530 · Data from Cloud Storage

Affected Version Matrix 4

VendorProductVersion RangeStatus
Red HatRed Hat build of Keycloak 26.626.6.3-3< *unaffected
26.6-6< *unaffected
26.6-6< *unaffected
Red HatRed Hat build of Keycloak 26.6.3anyunaffected
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I. Basic Information for CVE-2026-9088

Vulnerability Information
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Vulnerability Title
Keycloak: keycloak: information disclosure due to user profile permission bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in org.keycloak.services. An administrator with delegated access to read group memberships and users can bypass user profile permissions by accessing the group members endpoint. This allows the administrator to view user attributes that are explicitly configured to be denied, leading to information disclosure.
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
CWE-1220
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，该漏洞源于具有委托访问权限读取组成员身份和用户的管理员可以通过访问组成员端点绕过用户配置文件权限，可能导致管理员查看明确配置为拒绝的用户属性，导致信息泄露。
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

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat build of Keycloak 26.6 26.6.3-3 ~ * cpe:/a:redhat:build_keycloak:26.6::el9
Red HatRed Hat build of Keycloak 26.6 26.6-6 ~ * cpe:/a:redhat:build_keycloak:26.6::el9
Red HatRed Hat build of Keycloak 26.6 26.6-6 ~ * cpe:/a:redhat:build_keycloak:26.6::el9
Red HatRed Hat build of Keycloak 26.6.3-cpe:/a:redhat:build_keycloak:26.6::el9

II. Public POCs for CVE-2026-9088

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III. Intelligence Information for CVE-2026-9088

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Vendor Advisories for CVE-2026-9088 (4)

Same Patch Batch · Red Hat · 2026-06-05 · 11 CVEs total

CVE-2026-113327.8 HIGHAnsible-core: argument injection in ansible-galaxy role install leads to arbitrary code ex
CVE-2026-502567.8 HIGHXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font
CVE-2026-502577.8 HIGHXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestro
CVE-2026-502597.8 HIGHXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb s
CVE-2026-502587.8 HIGHXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb k
CVE-2026-502607.8 HIGHXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter(
CVE-2026-502617.8 HIGHXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangeco
CVE-2026-502647.8 HIGHXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dr
CVE-2026-502625.5 MEDIUMXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in gl
CVE-2026-502635.5 MEDIUMXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information dis

IV. Related Vulnerabilities

Same product: Red Hat build of Keycloak 26.6
Same vendor: Red Hat
Same weakness: CWE-1220

V. Comments for CVE-2026-9088

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