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CVE-2026-1486— Org.keycloak.protocol.oidc.grants: disabled identity providers are still accepted for jwt authorization grant

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存在安全特征问题漏洞，该漏洞源于jwt-authorization-grant流程中服务器未在颁发令牌前验证身份提供商是否启用，可能导致攻击者使用已禁用身份提供商的签名密钥生成有效断言。

CVSS 8.8 · High EPSS 0.47% · P38

Affected Version Matrix 4

VendorProduct Version RangeStatus
Red Hat Red Hat build of Keycloak 26.4 26.4.9-1< * unaffected
26.4-11< * unaffected
26.4-10< * unaffected
Red Hat Red Hat build of Keycloak 26.4.9 any unaffected
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I. Basic Information for CVE-2026-1486

Vulnerability Information
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Vulnerability Title
Org.keycloak.protocol.oidc.grants: disabled identity providers are still accepted for jwt authorization grant
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Keycloak. A vulnerability exists in the jwt-authorization-grant flow where the server fails to verify if an Identity Provider (IdP) is enabled before issuing tokens. The issuer lookup mechanism (lookupIdentityProviderFromIssuer) retrieves the IdP configuration but does not filter for isEnabled=false. If an administrator disables an IdP (e.g., due to a compromise or offboarding), an entity possessing that IdP's signing key can still generate valid JWT assertions that Keycloak accepts, resulting in the issuance of valid access tokens.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当实现的标准安全检查
Source: CVE Program / CVE List V5
Vulnerability Title
Keycloak 安全特征问题漏洞
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存在安全特征问题漏洞，该漏洞源于jwt-authorization-grant流程中服务器未在颁发令牌前验证身份提供商是否启用，可能导致攻击者使用已禁用身份提供商的签名密钥生成有效断言。
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-2026-1486

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III. Intelligence Information for CVE-2026-1486

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Vendor Advisories for CVE-2026-1486 (2)

Same Patch Batch · Red Hat · 2026-02-09 · 3 CVEs total

CVE-2026-1529 8.1 HIGH Org.keycloak.services.resources.organizations: keycloak: unauthorized organization registr
CVE-2025-14778 5.4 MEDIUM Keycloak: incorrect ownership checks in /uma-policy/

IV. Related Vulnerabilities

Same product: Red Hat build of Keycloak 26.4
Same vendor: Red Hat
Same weakness: CWE-358

V. Comments for CVE-2026-1486

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