keycloak-services: keycloak-services: Google external access-token exchange bypasses hosted-domain restriction

Keycloak allows users to log in using Google accounts and can be configured to only allow users from specific Google Workspace domains. A flaw was found where the token exchange feature, which allows swapping a Google token for a Keycloak token, does not check these domain restrictions. This mean...

keycloak-services: keycloak-services: FGAP V2 group assignment bypass during user creation

A flaw was found in the user creation component of Keycloak when Fine-Grained Admin Permissions V2 FGAP V2 is enabled. This issue allows a sub-administrator with permission to create users to add those users to any group, even groups the sub-administrator is not authorized to manage. This could...

keycloak-services: keycloak-services: Incomplete fix for arbitrary filesystem path probing via keystore parameters

A flaw was found in the key provider component of the keycloak-services library, which is the core engine for the Red Hat Build of Keycloak. The issue occurs because a previous fix for path probing was incomplete, allowing a realm administrator to still submit arbitrary filesystem paths as keysto...

keycloak-services: keycloak-services: Incomplete fix for CVE-2026-15573 allows policy enforcer bypass via percent-encoded URI segments

Keycloak provides a policy enforcer to protect applications by matching incoming web requests against defined security policies. A flaw was found where the enforcer fails to correctly normalize web addresses that contain special encoded characters, such as those representing semicolons or directo...

keycloak-services: keycloak-services: Privilege escalation via impersonation role allows takeover of realm administrator accounts

Keycloak is an open-source identity and access management solution. A vulnerability was discovered where a user with the impersonation role can impersonate a realm administrator. This allows the attacker to gain full administrative control over the realm, including the ability to manage users,...

keycloak-services: keycloak-services: Broker-originated username collision causes account lockout

A flaw was found in the first-broker-login flow of the keycloak-services component. This component handles the initial authentication and account linking when a user logs in via an external identity provider. The issue allows an attacker to register a matching username on an external provider to...

keycloak-services: keycloak-services: Incorrect authorization in admin role-composite deletion allows delegated admin to remove privileged child roles

A flaw was found in the admin REST API of Keycloak, a solution for identity and access management. The issue occurs when a delegated administrator attempts to remove a child role from a composite role. Due to missing authorization checks, an attacker with limited administrative permissions can...

keycloak-services: keycloak-services: SAML Redirect DEFLATE helpers leak native zlib state

A flaw was found in the SAML Redirect Binding implementation of Keycloak, an open-source identity and access management solution. The issue occurs because the custom DEFLATE compression and decompression helpers fail to release native zlib memory after use. An unauthenticated attacker can exploit...

keycloak-services: keycloak-services: Microsoft external access-token exchange bypasses configured tenant

Keycloak provides a way to let users log in using Microsoft accounts while restricting access to a specific organization tenant. A flaw was discovered where this restriction is ignored when using the token exchange feature. This means an attacker with a valid Microsoft token from a completely...

keycloak-services: keycloak-services: OIDC redirect_uri fragment bypass in HTTP parameter pollution check

A flaw was found in the keycloak-services component of Keycloak, which handles OpenID Connect OIDC authentication flows. The issue occurs because the security check designed to prevent HTTP parameter pollution only inspects the query portion of a redirect URL and ignores the fragment portion. Whe...

keycloak-services: keycloak-services: unauthenticated DoS via unbounded locale caching

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them...

keycloak-services: keycloak-services: JWT Bearer authorization grant does not enforce consentRequired

A flaw was found in the JWT Bearer authorization grant implementation within the keycloak-services component of Red Hat Build of Keycloak. This component handles various OAuth2 and OpenID Connect grant types used for issuing access tokens. The issue occurs because the JWT Bearer grant fails to...

CVE-2026-79651 Keycloak-services: keycloak-services: unauthenticated dos via unbounded locale caching

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them...

CVE-2026-79651 Keycloak-services: keycloak-services: unauthenticated dos via unbounded locale caching

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them...

CVE-2026-79651

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them...

CVE-2026-79651

CVE-2026-79651 is an unauthenticated denial-of-service vulnerability in the keycloak-services component of Keycloak, specifically in its theme localization endpoints . The root cause is that the system accepts arbitrary locale tags from unauthenticated requests and stores them in a permanent in-m...

ch.iterial.keycloak.plugins:keycloak-directus-plugin (>=0.1.0, <=0.7.0), ch.nerdin.keycloak.extensions:avatar-extension (0.0.1) +162 more potentially affected by CVE-2026-79651 via org.keycloak:keycloak-services (>=23.0.0, <=26.7.3)

org.keycloak:keycloak-services MAVEN version =23.0.0, =0.1.0, =24.3.0.0, =24.3.0.0, =1.0.0, =1.0.0, =1.2.0, =1.0.1, =1.0.1, =1.0.1, =1.2.0 and more Source cves: CVE-2026-79651 Source advisory: MEND:CVE-2026-79651https://vulners.com/mend/MEN...

CVE-2026-74909 Keycloak-services: keycloak-services: incomplete fix for cve-2026-15573 allows policy enforcer bypass via percent-encoded uri segments

Keycloak provides a policy enforcer to protect applications by matching incoming web requests against defined security policies. A flaw was found where the enforcer fails to correctly normalize web addresses that contain special encoded characters, such as those representing semicolons or directo...

CVE-2026-18212 Keycloak-services: keycloak-services: saml redirect deflate helpers leak native zlib state

A flaw was found in the SAML Redirect Binding implementation of Keycloak, an open-source identity and access management solution. The issue occurs because the custom DEFLATE compression and decompression helpers fail to release native zlib memory after use. An unauthenticated attacker can exploit...

CVE-2026-18212

Keycloak 's SAML Redirect Binding implementation is affected by a native memory leak. The custom DEFLATE compression and decompression helpers fail to release native zlib memory after processing, so an unauthenticated attacker can send repeated malformed SAML requests to exhaust native memory and...