BIT-KEYCLOAK-2026-11800 Org.keycloak:keycloak-services: keycloak: authentication bypass via jwt algorithm confusion

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to...

BIT-KEYCLOAK-2026-0871 Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators

A flaw was found in Keycloak. An administrator with manage-users permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the syste...

BIT-KEYCLOAK-2025-3910 Org.keycloak.authentication: two factor authentication bypass

A flaw was found in Keycloak. The org.keycloak.authorization package may be vulnerable to circumventing required actions, allowing users to circumvent requirements such as setting up two-factor authentication...

BIT-KEYCLOAK-2025-12150 Org.keycloak/keycloak-services: webauthn attestation statement verification bypass

A flaw was found in Keycloak’s WebAuthn registration component. This vulnerability allows an attacker to bypass the configured attestation policy and register untrusted or forged authenticators via submission of an attestation object with fmt: "none", even when the realm is configured to require...

BIT-KEYCLOAK-2024-7341 Wildfly-elytron: org.keycloak/keycloak-services: session fixation in elytron saml adapters

A session fixation issue was discovered in the SAML adapters provided by Keycloak. The session ID and JSESSIONID cookie are not changed at login time, even when the turnOffChangeSessionIdOnLogin option is configured. This flaw allows an attacker who hijacks the current session before authenticati...

BIT-KEYCLOAK-2024-7318 Keycloak-core: one time passcode (otp) is valid longer than expiration timeseverity

A vulnerability was found in Keycloak. Expired OTP codes are still usable when using FreeOTP when the OTP token period is set to 30 seconds default. Instead of expiring and deemed unusable around 30 seconds in, the tokens are valid for an additional 30 seconds totaling 1 minute. A one time passco...

BIT-KEYCLOAK-2024-7260 Keycloak-core: open redirect on account page

An open redirect vulnerability was found in Keycloak. A specially crafted URL can be constructed where the referrer and referreruri parameters are made to trick a user to visit a malicious webpage. A trusted URL can trick users and automation into believing that the URL is safe, when, in fact, it...

CVE-2026-79652

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-2026-79652 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-2026-79652

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-2026-79652 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...

EUVD-2026-65465

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-2026-79652

A flaw in the JWT Bearer authorization grant within the keycloak-services component of Red Hat Build of Keycloak fails to verify whether a client requires user consent before issuing an access token. An authenticated attacker with valid client credentials and a trusted identity provider assertion...

CVE-2026-79652

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...

BIT-KEYCLOAK-2026-18963 Flaw in the reset-credentials flow of the keycloak-services component

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...

BIT-KEYCLOAK-2026-15571 Flaw in the legacy client-initiated account-linking endpoint of Keycloak

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...

Sensitive Information Disclosure

Keycloak is vulnerable to Sensitive Information Disclosure. The vulnerability is due to improper masking of sensitive authentication configuration values, which allows administrators with view-only permissions to access third-party service credentials such as reCAPTCHA secret keys...

Information Disclosure

Keycloak is vulnerable to information disclosure. The vulnerability is due to insufficient authorization checks in the default-groups REST endpoint and realm representation, which allows a delegated administrator with realm-viewing permissions to access the names and identifiers of hidden default...

Improper Input Validation

Keycloak is vulnerable to Improper Input Validation. The vulnerability is due to the HTTP parameter pollution check ignoring the fragment portion of wildcard redirect URIs, allowing an attacker to inject duplicate security parameters that may cause improperly configured clients to trust...

Improper Hostname Validation

org.keycloak, keycloak-services is vulnerable to improper hostname validation. The vulnerability is due to improper validation of wildcard domain suffixes, which allows an attacker who controls the reverse DNS of their connection to bypass host-based restrictions and perform unauthorized client...