Keycloak 26.4.x < 26.4.15 / 26.6.x < 26.6.6 Unauthenticated Account Takeover

The version of Keycloak installed on the remote host is 26.4.x prior to 26.4.15, or 26.6.x prior to 26.6.6. It is, therefore, affected by a vulnerability: - A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access...

CVE-2026-15571

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

Critical: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.15 Images Security Update

New images are available for Red Hat build of Keycloak 26.4.15 and Red Hat build of Keycloak 26.4.15 Operator, running on OpenShift Container Platform Red Hat build of Keycloak is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Ha...

Critical: Red Hat Security Advisory: Red Hat build of Keycloak 26.6.6 Images Security Update

New images are available for Red Hat build of Keycloak 26.6.6 and Red Hat build of Keycloak 26.6.6 Operator, running on OpenShift Container Platform 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...

CVE-2026-15571 Keycloak-services: keycloak-services: predictable account-linking hash enables account takeover via malicious oidc client

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

CVE-2026-15571

Keycloak's legacy client-initiated account-linking endpoint uses a predictable hash to protect against unauthorized requests. A malicious OIDC client can forge a valid linking URL after tricking a victim to authenticate, connecting the victim's account to the attacker's external identity and enab...

EUVD-2026-61238

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

CVE-2026-15571

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

keycloak-services: keycloak-services: Keycloak: FGAP v2 role groups endpoint discloses hidden group metadata without group view permission

A vulnerability was discovered in Keycloak's administrative interface that allows certain administrators to see information about groups they shouldn't have access to. When the new Fine-Grained Admin Permissions FGAP v2 are turned on, an administrator who is allowed to see a specific "role" can...

keycloak: Keycloak: Privilege escalation via Time-of-Check to Time-of-Use (TOCTOU) vulnerability

A flaw was found in Keycloak. An authenticated administrator with the manage-clients role can exploit a Time-of-check to time-of-use TOCTOU vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to realm-admin for all users within the realm,...

Critical: Red Hat Security Advisory: Red Hat build of Keycloak 26.6.6 Security Update

New Red Hat build of Keycloak 26.6.6 packages are available from the Customer Portal Red Hat build of Keycloak 26.6.6 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security fixes...

keycloak-services: keycloak-services: Vault-resolved rotated client secrets leaked via Admin REST API

A flaw was found in the Keycloak Admin REST API, which is used to manage security realms and clients. The issue occurs when the system processes requests for rotated client secrets that are stored in a secure vault. Due to improper boundary enforcement, a delegated administrator with view-only...

keycloak-services: keycloak-services: Unauthenticated account takeover via reset-credentials flow bypass

A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the...

keycloak-services: keycloak-services: Predictable account-linking hash enables account takeover via malicious OIDC client

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC...

Critical: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.15 Security Update

New Red Hat build of Keycloak 26.4.15 packages are available from the Customer Portal Red Hat build of Keycloak 26.4.15 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security...

keycloak-services: keycloak-services: Unauthenticated account takeover via reset-credentials flow bypass

A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the...

GHSA-8C42-7QJ2-3J46 vulnerabilities

Vulnerabilities for packages: infinispan, kayenta, knative-kafka-broker, spark, camunda, elasticsearch, floci, thingsboard, kafbat-ui, pinot-fips, floci-az, kayenta-fips, zipkin, cruise-control-fips, conductor-fips, nuxeo, reposilite, strimzi-kafka-operator-fips, conductor, elasticsearch-fips,...

CVE-2026-59903 vulnerabilities

Vulnerabilities for packages: infinispan, kayenta, knative-kafka-broker, spark, camunda, elasticsearch, floci, thingsboard, kafbat-ui, pinot-fips, floci-az, kayenta-fips, zipkin, cruise-control-fips, conductor-fips, nuxeo, reposilite, strimzi-kafka-operator-fips, conductor, elasticsearch-fips,...

CVE-2026-18963

A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the...

CVE-2026-18963 Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass

A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the...