CVE-2026-2366— Keycloak: keycloak: information disclosure via authorization bypass in admin api
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I. Basic Information for CVE-2026-2366
Vulnerability Information
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Vulnerability Title
Keycloak: keycloak: information disclosure via authorization bypass in admin api
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
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Admin API中存在授权绕过，可能导致信息泄露。
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
| 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-2026-2366
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|---|
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- 2439081 – (CVE-2026-2366) CVE-2026-2366 keycloak: Keycloak: Information disclosure via authorization bypass in Admin APIissue-trackingx_refsource_REDHAT
- https://nvd.nist.gov/vuln/detail/CVE-2026-2366
Same Patch Batch · Red Hat · 2026-03-12 · 4 CVEs total
| CVE-2026-3099 | 5.8 MEDIUM | Libsoup: libsoup: authentication bypass via digest authentication replay attack |
| CVE-2026-2376 | 4.9 MEDIUM | Mirror-registry: quay: quay: server-side request forgery via open redirect vulnerability i |
| CVE-2026-3234 | 4.3 MEDIUM | Mod_proxy_cluster: mod_proxy_cluster: response body corruption via crlf injection |
IV. Related Vulnerabilities
Same product: Red Hat build of Keycloak 26.4
- CVE-2026-3121
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Keycloak: keycloak: denial of service due to excessive samlr - CVE-2026-3429
Org.keycloak.services.resources.account: improper access con - CVE-2026-3911
Org.keycloak.services.resources.admin.userresource: keycloak
Same vendor: Red Hat
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Openvswitch: open vswitch: denial of service via malformed f - CVE-2026-34002
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Same weakness: CWE-639
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V. Comments for CVE-2026-2366
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