CVE-2026-2733

Org.keycloak/keycloak-services: keycloak: missing check on disabled client for docker registry protocol

A flaw was identified in the Docker v2 authentication endpoint of Keycloak, where tokens continue to be issued even after a Docker registry client has been administratively disabled. This means that turning the client “Enabled” setting to OFF does not fully prevent access. As a result, previously valid credentials can still be used to obtain authentication tokens. This weakens administrative controls and could allow unintended access to container registry resources.

CVSS 3.1 · 3.8 Low EPSS < 1% KEV · Not listed

Vendors

Redhat

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Build Keycloak Build Of Keycloak Jboss Enterprise Application Platform and 4 more

CVE-2026-0871

Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators

A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

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Build Keycloak Build Of Keycloak Jboss Enterprise Application Platform and 4 more

CVE-2026-3009

Org.keycloak/keycloak-services: improper enforcement of disabled identity provider in identitybrokerservice (authentication bypass)

A security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using an Identity Provider (IdP) even after it has been disabled by an administrator. An attacker who knows the IdP alias can reuse a previously generated login request to bypass the administrative restriction. This undermines access control enforcement and may allow unauthorized authentication through a disabled external provider.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

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Redhat

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Build Keycloak Build Of Keycloak Jboss Enterprise Application Platform and 4 more

CVE-2026-1035

Org.keycloak.protocol.oidc: keycloak refresh token reuse bypass via toctou race condition

A flaw was found in the Keycloak server during refresh token processing, specifically in the TokenManager class responsible for enforcing refresh token reuse policies. When strict refresh token rotation is enabled, the validation and update of refresh token usage are not performed atomically. This allows concurrent refresh requests to bypass single-use enforcement and issue multiple access tokens from the same refresh token. As a result, Keycloak’s refresh token rotation hardening can be undermined.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Redhat

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Build Keycloak Jboss Enterprise Application Platform Jbosseapxp and 1 more

CVE-2026-3121

Keycloak: org.keycloak/keycloak-services: keycloak: privilege escalation via manage-clients permission

A flaw was found in Keycloak. An administrator with `manage-clients` permission can exploit a misconfiguration where this permission is equivalent to `manage-permissions`. This allows the administrator to escalate privileges and gain control over roles, users, or other administrative functions within the realm. This privilege escalation can occur when admin permissions are enabled at the realm level.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Keycloak Redhat

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Keycloak Build Keycloak Build Of Keycloak and 5 more

CVE-2026-1180

Org.keycloak.protocol.oidc: blind server-side request forgery (ssrf) in keycloak oidc dynamic client registration via jwks_uri

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk.

CVSS 3.1 · 5.8 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Build Keycloak Jboss Enterprise Application Platform Jbosseapxp and 1 more

CVE-2026-3190

Keycloak: keycloak: information disclosure via improper role enforcement in uma 2.0 protection api

A flaw was found in Keycloak. The User-Managed Access (UMA) 2.0 Protection API endpoint for permission tickets fails to enforce the `uma_protection` role check. This allows any authenticated user with a token issued for a resource server client, even without the `uma_protection` role, to enumerate all permission tickets in the system. This vulnerability partial leads to information disclosure.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Keycloak Redhat

Products

Keycloak Build Keycloak Build Of Keycloak

CVE-2024-6162

Undertow: url-encoded request path information can be broken on ajp-listener

A vulnerability was found in Undertow, where URL-encoded request paths can be mishandled during concurrent requests on the AJP listener. This issue arises because the same buffer is used to decode the paths for multiple requests simultaneously, leading to incorrect path information being processed. As a result, the server may attempt to access the wrong path, causing errors such as "404 Not Found" or other application failures. This flaw can potentially lead to a denial of service, as legitimate resources become inaccessible due to the path mix-up.

CVSS 3.1 · 7.5 High EPSS 1.7% KEV · Not listed

Vendors

Redhat

Products

Apache Camel Hawtio Apache Camel Spring Boot Build Keycloak and 8 more

CVE-2025-13881

Org.keycloak.services.resources.admin: keycloak: limited administrator can retrieve sensitive user attributes via admin api

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.

CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Build Keycloak

CVE-2025-14083

Keycloak-server: keycloak: improper access control in admin rest api leads to information disclosure

A flaw was found in the Keycloak Admin REST API. This vulnerability allows the exposure of backend schema and rules, potentially leading to targeted attacks or privilege escalation via improper access control.

CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

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CVE-2025-14559

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

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.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

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CVE-2024-5967

Keycloak: leak of configured ldap bind credentials through the keycloak admin console

A vulnerability was found in Keycloak. The LDAP testing endpoint allows changing the Connection URL  independently without re-entering the currently configured LDAP bind credentials. This flaw allows an attacker with admin access (permission manage-realm) to change the LDAP host URL ("Connection URL") to a machine they control. The Keycloak server will connect to the attacker's host and try to authenticate with the configured credentials, thus leaking them to the attacker. As a consequence, an attacker who has compromised the admin console or compromised a user with sufficient privileges can leak domain credentials and attack the domain.

CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Build Keycloak Red Hat Single Sign On Rhosemc

CVE-2024-47072

XStream is vulnerable to a Denial of Service attack due to stack overflow from a manipulated binary input stream

XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to terminate the application with a stack overflow error resulting in a denial of service only by manipulating the processed input stream when XStream is configured to use the BinaryStreamDriver. XStream 1.4.21 has been patched to detect the manipulation in the binary input stream causing the the stack overflow and raises an InputManipulationException instead. Users are advised to upgrade. Users unable to upgrade may catch the StackOverflowError in the client code calling XStream if XStream is configured to use the BinaryStreamDriver.

CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed

Vendors

Redhat X-stream

Products

Build Keycloak Jboss Data Grid Ocp Tools and 1 more

CVE-2024-4028

Keycloak-core: stored xss in keycloak when creating a items in admin console

A vulnerability was found in Keycloak. This issue may allow a privileged attacker to use a malicious payload as the permission while creating items (Resource and Permissions) from the admin console, leading to a stored cross-site scripting (XSS) attack.

CVSS 3.1 · 3.8 Low EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Build Keycloak Red Hat Single Sign On

CVE-2024-2419

Keycloak: path traversal in the redirect validation

A flaw was found in Keycloak's redirect_uri validation logic. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to the theft of an access token, making it possible for the attacker to impersonate other users. It is very similar to CVE-2023-6291.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

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CVE-2025-14777

Keycloak: keycloak idor in realm client creating/deleting

A flaw was found in Keycloak. An IDOR (Broken Access Control) vulnerability exists in the admin API endpoints for authorization resource management, specifically in ResourceSetService and PermissionTicketService. The system checks authorization against the resourceServer (client) ID provided in the API request, but the backend database lookup and modification operations (findById, delete) only use the resourceId. This mismatch allows an authenticated attacker with fine-grained admin permissions for one client (e.g., Client A) to delete or update resources belonging to another client (Client B) within the same realm by supplying a valid resource ID.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

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CVE-2025-12390

Org.keycloak.protocol.oidc.endpoints.logoutendpoint: offline session takeover due to reused authentication session id

A flaw was found in Keycloak. In Keycloak where a user can accidentally get access to another user's session if both use the same device and browser. This happens because Keycloak sometimes reuses session identifiers and doesn’t clean up properly during logout when browser cookies are missing. As a result, one user may receive tokens that belong to another user.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

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CVE-2025-12110

Keycloak: org.keycloak:keycloak-services: user can refresh offline session even after client's offline_access scope was removed

A flaw was found in Keycloak. An offline session continues to be valid when the offline_access scope is removed from the client. The refresh token is accepted and you can continue to request new tokens for the session. As it can lead to a situation where an administrator removes the scope, and assumes that offline sessions are no longer available, but they are.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

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CVE-2025-11538

Keycloak-server: debug default bind address

A vulnerability exists in Keycloak's server distribution where enabling debug mode (--debug <port>) insecurely defaults to binding the Java Debug Wire Protocol (JDWP) port to all network interfaces (0.0.0.0). This exposes the debug port to the local network, allowing an attacker on the same network segment to attach a remote debugger and achieve remote code execution within the Keycloak Java virtual machine.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

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CVE-2025-11429

Keycloak-server: too long and not settings compliant session

A flaw was found in Keycloak. Keycloak does not immediately enforce the disabling of the "Remember Me" realm setting on existing user sessions. Sessions created while "Remember Me" was active retain their extended session lifetime until they expire, overriding the administrator's recent security configuration change. This is a logic flaw in session management increases the potential window for successful session hijacking or unauthorized long-term access persistence. The flaw lies in the session expiration logic relying on the session-local "remember-me" flag without validating the current realm-level configuration.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Build Keycloak