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CVE-2026-93999— Keycloak-services: keycloak-services: token refresh continues issuing tokens for disabled audience clients

Quick assessment

Affected
Red Hat Red Hat Build of Keycloak
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（一款开源的身份和访问管理解决方案）的OIDC协议实现中存在一个缺陷。该问题发生在令牌刷新过程中，当服务器从存储的客户端ID恢复所请求的受众（audience）时触发。Keycloak在签发新的访问令牌之前，未能验证目标受众的客户端是否仍处于启用状态。这使得拥有现有刷新令牌的应用程序能够持续为已禁用的客户端获取有效的访问令牌，从而可能绕过依赖离线JWT验证的资源服务器的管理访问控制。

CVSS 4.2 · Medium
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I. Basic Information for CVE-2026-93999

Vulnerability Information
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Vulnerability Title
Keycloak-services: keycloak-services: token refresh continues issuing tokens for disabled audience clients
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the OIDC protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs during the token refresh process when the server restores requested audiences from stored client IDs. Keycloak fails to verify if the target audience client is still enabled before issuing a new access token. This allows an application with an existing refresh token to continue obtaining valid access tokens for a disabled client, potentially bypassing administrative access controls for resource servers that rely on offline JWT validation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Build of Keycloak - cpe:/a:redhat:build_keycloak:
Red Hat Red Hat Build of Keycloak - cpe:/a:redhat:build_keycloak:
Red Hat Red Hat Build of Keycloak - cpe:/a:redhat:build_keycloak:
Red Hat Red Hat Single Sign-On 7 - cpe:/a:redhat:red_hat_single_sign_on:7

II. Public POCs for CVE-2026-93999

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III. Intelligence Information for CVE-2026-93999

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Vendor Advisories for CVE-2026-93999 (1)

Other References for CVE-2026-93999 (1)

Same Patch Batch · Red Hat · 2026-09-19 · 3 CVEs total

CVE-2026-94000 6.6 MEDIUM Keycloak-services: keycloak-services: delegated admin with manage-users can escalate to re
CVE-2026-94001 6.5 MEDIUM Keycloak-services: keycloak-services: admin credential delete bypasses denied reset-passwo

IV. Related Vulnerabilities

Same product: Red Hat Build of Keycloak
Same vendor: Red Hat
Same weakness: CWE-862

V. Comments for CVE-2026-93999

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