Red Hat Security Advisory: Red Hat build of Keycloak 26.4.11 Images Update
Red Hat build of Keycloak is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Hat build of Keycloak for OpenShift image provides an authentication server that you can use to log in centrally, log out, and register. You can also manage user accounts for web applications, mobile applications, and RESTful web services. Red Hat build of Keycloak Operator for OpenShift simplifies deployment and management of Keycloak 26.4.11 clusters. This erratum releases new images for Red Hat build of Keycloak 26.4.11 for use within the OpenShift Container Platform cloud computing Platform-as-a-Service (PaaS) for on-premise or private cloud deployments, aligning with the standalone product release. Security fixes: * Keycloak Admin REST API: Improper Access Control leads to sensitive role metadata information disclosure (CVE-2025-14082) * Improper Access Control in Admin REST API leads to information disclosure (CVE-2025-14083) * keycloak-rhel9-operator: Keycloak IDOR in realm client creating/deleting (CVE-2025-14777) * Keycloak Refresh Token Reuse Bypass via TOCTOU Race Condition (CVE-2026-1035) * Blind Server-Side Request Forgery (SSRF) in Keycloak OIDC Dynamic Client Registration via jwks_uri (CVE-2026-1180) * Information Disclosure via improper role enforcement in UMA 2.0 Protection API (CVE-2026-3190) * Privilege escalation via manage-clients permission (CVE-2026-3121) * Information disclosure due to redirect_uri validation bypass (CVE-2026-3872) * Information disclosure of disabled user attributes via administrative endpoint (CVE-2026-3911) * Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API (CVE-2026-3429) * Information disclosure via authorization bypass in Admin API (CVE-2026-2366) * Replay of action tokens via improper handling of single-use entries (CVE-2026-4325) * UMA policy bypass allows authenticated users to gain unauthorized access to victim-owned resources (CVE-2026-4636) * Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw (CVE-2026-4282) * Denial of Service via excessive processing of OpenID Connect scope parameters (CVE-2026-4634)
AI Analysis
Technical Summary
This advisory covers a set of 15 security vulnerabilities affecting the Red Hat build of Keycloak 26.4.11 and its Operator on OpenShift. The issues include improper access control in the Admin REST API leading to sensitive role metadata disclosure (CVE-2025-14082, CVE-2025-14083), insecure direct object references (CVE-2025-14777), token reuse bypass via race conditions (CVE-2026-1035), blind SSRF via OIDC dynamic client registration (CVE-2026-1180), information disclosure through improper role enforcement and redirect URI validation bypass (CVE-2026-3190, CVE-2026-3872), privilege escalation via manage-clients permission and forged authorization codes (CVE-2026-3121, CVE-2026-4282), MFA deletion and account takeover via improper access control (CVE-2026-3429), replay of action tokens (CVE-2026-4325), UMA policy bypass (CVE-2026-4636), and denial of service through excessive OpenID Connect scope processing (CVE-2026-4634). These vulnerabilities collectively impact authentication, authorization, and token management functions within Keycloak. The advisory provides updated container images to mitigate these issues.
Potential Impact
The vulnerabilities allow attackers to gain unauthorized access to sensitive role metadata, escalate privileges, bypass multi-factor authentication, disclose sensitive user and system information, perform server-side request forgery, bypass authorization policies, and cause denial of service. These impacts can lead to account takeover, unauthorized resource access, and disruption of authentication services in environments using the affected Keycloak versions on OpenShift.
Mitigation Recommendations
Red Hat has released updated container images for Red Hat build of Keycloak 26.4.11 and its Operator to address these vulnerabilities. Users should back up their existing installations and apply the updated images as provided by Red Hat. No additional mitigations are specified beyond applying the updated images. Patch status is confirmed by the vendor advisory indicating new images are available. Users should consult the Red Hat advisory RHSA-2026:6478 for detailed update instructions.
Red Hat Security Advisory: Red Hat build of Keycloak 26.4.11 Images Update
Description
Red Hat build of Keycloak is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Hat build of Keycloak for OpenShift image provides an authentication server that you can use to log in centrally, log out, and register. You can also manage user accounts for web applications, mobile applications, and RESTful web services. Red Hat build of Keycloak Operator for OpenShift simplifies deployment and management of Keycloak 26.4.11 clusters. This erratum releases new images for Red Hat build of Keycloak 26.4.11 for use within the OpenShift Container Platform cloud computing Platform-as-a-Service (PaaS) for on-premise or private cloud deployments, aligning with the standalone product release. Security fixes: * Keycloak Admin REST API: Improper Access Control leads to sensitive role metadata information disclosure (CVE-2025-14082) * Improper Access Control in Admin REST API leads to information disclosure (CVE-2025-14083) * keycloak-rhel9-operator: Keycloak IDOR in realm client creating/deleting (CVE-2025-14777) * Keycloak Refresh Token Reuse Bypass via TOCTOU Race Condition (CVE-2026-1035) * Blind Server-Side Request Forgery (SSRF) in Keycloak OIDC Dynamic Client Registration via jwks_uri (CVE-2026-1180) * Information Disclosure via improper role enforcement in UMA 2.0 Protection API (CVE-2026-3190) * Privilege escalation via manage-clients permission (CVE-2026-3121) * Information disclosure due to redirect_uri validation bypass (CVE-2026-3872) * Information disclosure of disabled user attributes via administrative endpoint (CVE-2026-3911) * Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API (CVE-2026-3429) * Information disclosure via authorization bypass in Admin API (CVE-2026-2366) * Replay of action tokens via improper handling of single-use entries (CVE-2026-4325) * UMA policy bypass allows authenticated users to gain unauthorized access to victim-owned resources (CVE-2026-4636) * Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw (CVE-2026-4282) * Denial of Service via excessive processing of OpenID Connect scope parameters (CVE-2026-4634)
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers a set of 15 security vulnerabilities affecting the Red Hat build of Keycloak 26.4.11 and its Operator on OpenShift. The issues include improper access control in the Admin REST API leading to sensitive role metadata disclosure (CVE-2025-14082, CVE-2025-14083), insecure direct object references (CVE-2025-14777), token reuse bypass via race conditions (CVE-2026-1035), blind SSRF via OIDC dynamic client registration (CVE-2026-1180), information disclosure through improper role enforcement and redirect URI validation bypass (CVE-2026-3190, CVE-2026-3872), privilege escalation via manage-clients permission and forged authorization codes (CVE-2026-3121, CVE-2026-4282), MFA deletion and account takeover via improper access control (CVE-2026-3429), replay of action tokens (CVE-2026-4325), UMA policy bypass (CVE-2026-4636), and denial of service through excessive OpenID Connect scope processing (CVE-2026-4634). These vulnerabilities collectively impact authentication, authorization, and token management functions within Keycloak. The advisory provides updated container images to mitigate these issues.
Potential Impact
The vulnerabilities allow attackers to gain unauthorized access to sensitive role metadata, escalate privileges, bypass multi-factor authentication, disclose sensitive user and system information, perform server-side request forgery, bypass authorization policies, and cause denial of service. These impacts can lead to account takeover, unauthorized resource access, and disruption of authentication services in environments using the affected Keycloak versions on OpenShift.
Mitigation Recommendations
Red Hat has released updated container images for Red Hat build of Keycloak 26.4.11 and its Operator to address these vulnerabilities. Users should back up their existing installations and apply the updated images as provided by Red Hat. No additional mitigations are specified beyond applying the updated images. Patch status is confirmed by the vendor advisory indicating new images are available. Users should consult the Red Hat advisory RHSA-2026:6478 for detailed update instructions.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6478
- Cve Count
- 15
- Additional Cves
- ["CVE-2025-14083","CVE-2025-14777","CVE-2026-1035","CVE-2026-1180","CVE-2026-2366","CVE-2026-3121","CVE-2026-3190","CVE-2026-3429","CVE-2026-3872","CVE-2026-3911","CVE-2026-4282","CVE-2026-4325","CVE-2026-4634","CVE-2026-4636"]
- Cvss Version
- null
Threat ID: 6a3c0ceeeed863c81e238408
Added to database: 06/24/2026, 16:59:26 UTC
Last enriched: 06/24/2026, 17:02:22 UTC
Last updated: 07/31/2026, 19:24:47 UTC
Views: 51
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