CVE-2026-18215 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...

EUVD-2026-51480

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...

CVE-2026-18215

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...

EUVD-2026-51479

A flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs when Keycloak handles SAML authentication requests using the HTTP-Redirect binding. If a client is configured with a wildcard redirect URL, an attacker can...

CVE-2026-18217 Keycloak-services: keycloak-services: saml http-redirect binding response preserves query string leading to parameter pollution

A flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs when Keycloak handles SAML authentication requests using the HTTP-Redirect binding. If a client is configured with a wildcard redirect URL, an attacker can...

CVE-2026-18217

A flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs when Keycloak handles SAML authentication requests using the HTTP-Redirect binding. If a client is configured with a wildcard redirect URL, an attacker can...

CVE-2026-18217

CVE-2026-18217 affects Keycloak’s SAML protocol implementation, specifically when handling SAML authentication requests via HTTP-Redirect binding with wildcard redirect URLs. The root cause is a query-string handling flaw that allows an attacker to craft a request whose parameters are preserved a...

CVE-2026-18217 Keycloak-services: keycloak-services: saml http-redirect binding response preserves query string leading to parameter pollution

A flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs when Keycloak handles SAML authentication requests using the HTTP-Redirect binding. If a client is configured with a wildcard redirect URL, an attacker can...

CVE-2026-18217

A flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs when Keycloak handles SAML authentication requests using the HTTP-Redirect binding. If a client is configured with a wildcard redirect URL, an attacker can...

EUVD-2026-51478

A flaw was found in the TokenManager component of the Keycloak identity management service. When an administrator attempts to revoke tokens for a specific application client using a "not-before" policy, the revocation may be silently ignored if the overall security realm already has an older,...

CVE-2026-18218

The vulnerability CVE-2026-18218 affects Keycloak’s TokenManager component. When an administrator revokes tokens for a specific client under a not-before policy, revocation can be silently ignored if the realm’s overall not-before policy is older but non-zero. As a result, previously issued token...

CVE-2026-18218

A flaw was found in the TokenManager component of the Keycloak identity management service. When an administrator attempts to revoke tokens for a specific application client using a "not-before" policy, the revocation may be silently ignored if the overall security realm already has an older,...

CVE-2026-18218 Keycloak-services: keycloak-services: client not-before revocation ignored when realm not-before is older but nonzero

A flaw was found in the TokenManager component of the Keycloak identity management service. When an administrator attempts to revoke tokens for a specific application client using a "not-before" policy, the revocation may be silently ignored if the overall security realm already has an older,...

CVE-2026-18218

A flaw was found in the TokenManager component of the Keycloak identity management service. When an administrator attempts to revoke tokens for a specific application client using a "not-before" policy, the revocation may be silently ignored if the overall security realm already has an older,...

CVE-2026-50559 vulnerabilities

Vulnerabilities for packages: keycloak-fips, apicurio-registry, apicurio-registry-fips, hono, request-9047-keycloak-fips, floci-az...

GHSA-QCXP-GM7M-4J5V vulnerabilities

Vulnerabilities for packages: keycloak-fips, apicurio-registry, apicurio-registry-fips, hono, request-9047-keycloak-fips, floci-az...

CVE-2026-18206: Improper Input Validation

A flaw was found in the keycloak-services component of Keycloak, which provides identity and access management services. The issue occurs when a realm administrator uses a wildcard domain like .example.com to restrict which hosts can register or update clients. Due to improper validation, the...

PT-2026-66724

Name of the Vulnerable Software and Affected Versions keycloak-services affected versions not specified Description A flaw exists in the OIDC token introspection endpoint of the keycloak-services component. The issue occurs when a confidential client, configured to receive signed JWT JSON Web Tok...

CVE-2026-18208: Missing Authorization

A flaw was found in the OIDC token introspection endpoint of the keycloak-services component. Keycloak is an open-source identity and access management solution used to secure modern applications and services. The issue occurs when a confidential client, configured to receive signed JWT...

PT-2026-66721

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the RoleContainerResource component of Keycloak. Certain name-based endpoints in the admin REST API fail to properly enforce authorization checks during the management of...