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CVE-2025-14559— Org.keycloak/keycloak-services: keycloak keycloak-services: business logic flaw allows unauthorized token issuance for disabled users

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，该漏洞源于令牌交换实现存在业务逻辑漏洞，可能导致为已禁用用户颁发访问和刷新令牌，引发未经授权的权限使用。

CVSS 6.5 · Medium EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

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I. Basic Information for CVE-2025-14559

Vulnerability Information
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Vulnerability Title
Org.keycloak/keycloak-services: keycloak keycloak-services: business logic flaw allows unauthorized token issuance for disabled users
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the keycloak-services component of Keycloak. This vulnerability allows the issuance of access and refresh tokens for disabled users, leading to unauthorized use of previously revoked privileges, via a business logic vulnerability in the Token Exchange implementation when a privileged client invokes the token exchange flow.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
业务逻辑错误
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，该漏洞源于令牌交换实现存在业务逻辑漏洞，可能导致为已禁用用户颁发访问和刷新令牌，引发未经授权的权限使用。
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-2025-14559

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III. Intelligence Information for CVE-2025-14559

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Vendor Advisories for CVE-2025-14559 (1)

Same Patch Batch · Red Hat · 2026-01-21 · 4 CVEs total

CVE-2026-0988 3.7 LOW Glib: glib: denial of service via integer overflow in g_buffered_input_stream_peek()
CVE-2026-1035 3.1 LOW Org.keycloak.protocol.oidc: keycloak refresh token reuse bypass via toctou race condition
CVE-2025-14083 2.7 LOW Keycloak-server: keycloak: improper access control in admin rest api leads to information

IV. Related Vulnerabilities

Same product: Red Hat build of Keycloak 26.4
Same vendor: Red Hat
Same weakness: CWE-840

V. Comments for CVE-2025-14559

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