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CVE-2025-13881— Org.keycloak.services.resources.admin: keycloak: limited administrator can retrieve sensitive user attributes via admin api

Quick assessment

Affected
Red Hat Red Hat build of Keycloak 26.4
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，该漏洞源于管理员API权限控制不当，可能导致受限管理员检索敏感用户属性。

CVSS 2.7 · Low EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-13881

Vulnerability Information
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Vulnerability Title
Org.keycloak.services.resources.admin: keycloak: limited administrator can retrieve sensitive user attributes via admin api
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Keycloak Admin API. This vulnerability allows an administrator with limited privileges to retrieve sensitive custom attributes via the /unmanagedAttributes endpoint, bypassing User Profile visibility settings.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5
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，该漏洞源于管理员API权限控制不当，可能导致受限管理员检索敏感用户属性。
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 26.4.9-1 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red Hat Red Hat build of Keycloak 26.4 26.4-11 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red Hat Red Hat build of Keycloak 26.4 26.4-10 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red Hat Red Hat build of Keycloak 26.4.9 - cpe:/a:redhat:build_keycloak:26.4::el9

II. Public POCs for CVE-2025-13881

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III. Intelligence Information for CVE-2025-13881

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Vendor Advisories for CVE-2025-13881 (1)

Same Patch Batch · Red Hat · 2026-02-02 · 6 CVEs total

CVE-2026-1761 8.6 HIGH Libsoup: stack-based buffer overflow in libsoup multipart response parsingmultipart http r
CVE-2026-1531 8.1 HIGH Foreman-kubevirt: foreman_kubevirt: man-in-the-middle due to insecure default ssl verifica
CVE-2026-1530 8.1 HIGH Fog-kubevirt: fog-kubevirt: man-in-the-middle vulnerability due to disabled certificate va
CVE-2026-1757 6.2 MEDIUM Libxml2: memory leak leading to local denial of service in xmllint interactive shell
CVE-2026-1760 5.3 MEDIUM Libsoup: soupserver: denial of service via http request smuggling

IV. Related Vulnerabilities

Same product: Red Hat build of Keycloak 26.4
Same vendor: Red Hat
Same weakness: CWE-266

V. Comments for CVE-2025-13881

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