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-security issue: Microsoft accounts login with tenant restriction can be bypassed via token exchange. A valid Microsoft token from a different organization could grant access to the Keycloak realm, exposing data or enabling unauthorized actions. Affected component is Keycloak’s Microsoft ...

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...

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...

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...

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...

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 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...

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

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-2026-18218 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-2026-18218

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,...

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,...

GHSA-QCXP-GM7M-4J5V vulnerabilities

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

CVE-2026-50559 vulnerabilities

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

CVE-2026-18209: Improper Validation of Consistency within Input

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...