BIT-KEYCLOAK-2026-4325 Keycloak: keycloak: replay of action tokens via improper handling of single-use entries

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links. This...

BIT-KEYCLOAK-2026-4282 Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

BIT-KEYCLOAK-2026-3911 Org.keycloak.services.resources.admin.userresource: keycloak: information disclosure of disabled user attributes via administrative endpoint

A flaw was found in Keycloak. An authenticated user with the view-users role could exploit a vulnerability in the UserResource component. By accessing a specific administrative endpoint, this user could improperly retrieve user attributes that were configured to be hidden. This unauthorized...

BIT-KEYCLOAK-2026-3872 Keycloak: keycloak: information disclosure due to redirect_uri validation bypass

A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers URIs that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information...

BIT-KEYCLOAK-2026-37982 Keycloak: org.keycloak.authentication: keycloak: unauthorized account takeover via webauthn token replay

A flaw was found in Keycloak. This authentication vulnerability allows a remote attacker to replay ExecuteActionsActionToken tokens within Keycloak's WebAuthn Web Authentication flow. By intercepting an execute-actions email link, an attacker can register their own authenticator to a victim's...

BIT-KEYCLOAK-2026-37981 Keycloak: org.keycloak.authorization: keycloak: information disclosure via broken access control in user lookup endpoint

A flaw was found in Keycloak. A broken access control vulnerability in the Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access UMA resource, to enumerate and harvest personally identifiable information PII for all realm users. By...

BIT-KEYCLOAK-2026-37979 Keycloak: keycloak: information disclosure via oidc token introspection endpoint audience bypass

A flaw was found in Keycloak. This access control vulnerability in Keycloak's OpenID Connect OIDC token introspection endpoint allows a confidential client to bypass audience restrictions. An attacker-controlled client with valid credentials can retrieve sensitive token claims intended for other...

BIT-KEYCLOAK-2026-37978 Keycloak: org.keycloak.services: keycloak: information disclosure via evaluate-scopes admin api

A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID userId parameter. This vulnerability allows for cross-role personally identifiable information PII leakage,...

BIT-KEYCLOAK-2026-3429 Org.keycloak.services.resources.account: improper access control leading to mfa deletion and account takeover in keycloak account rest api

A flaw was identified in the Account REST API of Keycloak that allows a user authenticated at a lower security level to perform sensitive actions intended only for higher-assurance sessions. Specifically, an attacker who has already obtained a victim’s password can delete the victim’s registered...

BIT-KEYCLOAK-2026-3047 Org.keycloak.broker.saml: keycloak saml broker: authentication bypass due to disabled saml client completing idp-initiated login

A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language SAML client is configured as an Identity Provider IdP-initiated broker landing target, it can still complete the login process and establish a Single Sign-On SSO session. This allows a remote attacker...

BIT-KEYCLOAK-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...

BIT-KEYCLOAK-2026-2603 Keycloak: keycloak: unauthorized authentication via disabled saml identity provider

A flaw was found in Keycloak. A remote attacker could bypass security controls by sending a valid SAML response from an external Identity Provider IdP to the Keycloak SAML endpoint for IdP-initiated broker logins. This allows the attacker to complete broker logins even when the SAML Identity...

BIT-KEYCLOAK-2026-2366 Keycloak: keycloak: information disclosure via authorization bypass in admin api

A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim'...

BIT-KEYCLOAK-2026-2575 Keycloak: keycloak: denial of service due to excessive samlrequest decompression

A flaw was found in Keycloak. An unauthenticated remote attacker can trigger an application level Denial of Service DoS by sending a highly compressed SAMLRequest through the SAML Redirect Binding. The server fails to enforce size limits during DEFLATE decompression, leading to an OutOfMemoryErro...

BIT-KEYCLOAK-2026-2092 Keycloak-services: keycloak: unauthorized access via improper validation of encrypted saml assertions

A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language SAML broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. Thi...

BIT-KEYCLOAK-2026-16443 Keycloak-services: keycloak-services: saml broker metadata import disables response signature validation

A flaw was found in the SAML metadata import functionality of the keycloak-services component, which is the core engine for identity brokering in Red Hat Build of Keycloak. When importing identity provider metadata that lacks specific usage attributes for keys, the system incorrectly disables...

BIT-KEYCLOAK-2026-16442 Keycloak-services: keycloak-services: saml idp-initiated broker login bypasses link-only restriction

A flaw was found in the SAML broker component of Keycloak, which is used to manage identity federation and user authentication. The issue occurs because the IdP-initiated Single Sign-On endpoint fails to check if a provider is restricted to account linking only. This allows an attacker with contr...

BIT-KEYCLOAK-2026-16102 Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappers

A flaw was found in the Dynamic Client Registration DCR component of Keycloak, an identity and access management solution. The default DCR policy fails to properly validate the claim path for User Property mappers, allowing them to write values to sensitive internal claim locations. An attacker...

BIT-KEYCLOAK-2026-16100 Keycloak-services: keycloak-services: unbounded metric cardinality in user event metrics via request-controlled error text

A flaw was found in the user-event metrics recording of Keycloak. When metrics are enabled, the system records raw error messages from failed account operations as Prometheus metric labels. Because these error messages can include user-supplied input like nonexistent client IDs, an authenticated...

BIT-KEYCLOAK-2026-1609 Org.keycloak/keycloak-quarkus-server: keycloak: unauthorized access via jwt authorization grant with disabled users

A flaw was found in Keycloak. When the JSON Web Token JWT authorization grant preview feature is enabled and a user account is disabled, Keycloak fails to validate the user’s disabled status during JWT authorization grant processing. A remote attacker with low privileges can exploit this improper...