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

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...

Privilege Escalation

Keycloak is vulnerable to Improper Authorization. The vulnerability is due to the Dynamic Client Registration policy failing to re-validate protocol mapper types during client updates, allowing an attacker with client registration privileges to replace an allowed mapper with a restricted...

Authentication Bypass

Keycloak is vulnerable to an authentication bypass. The vulnerability is due to missing brute-force protection validation in the CIBA token redemption handler, which allows an attacker with valid client credentials to obtain access and refresh tokens for a user whose account was locked after the...

Authorization Bypass

Keycloak is vulnerable to Authorization Bypass. The vulnerability is due to the token exchange feature ignoring tenant restrictions, where the restriction check is bypassed and an attacker with a valid Microsoft token from a different organization can gain access to the Keycloak realm...

Token Revocation Bypass

Keycloak is vulnerable to a token revocation bypass vulnerability. The vulnerability is due to an application-specific “not-before” token revocation policy being silently ignored when an older, non-zero realm-level policy exists, which allows an attacker to continue using previously issued tokens...

Improper Authorization

keycloak-services is vulnerable to an improper authorization. The vulnerability is due to insufficient permission checks when a restricted administrator lists users assigned to a role, which allows an attacker with limited administrative privileges to exploit the role-users endpoint and access...

Exploit for CVE-2026-18963

CVE-2026-18963 — Keycloak Unauthenticated Account Takeover...

Exploit for CVE-2026-18963

CVE-2026-18963 — Lab tái dựng lại Keycloak reset-credentials...

Exploit for CVE-2026-18963

CVE-2026-18963 Keycloak reset-credentials bypass → unauthent...

Exploit for CVE-2026-18963

CVE-2026-18963 Keycloak reset-credentials bypass → unauthenti...

CVE-2026-79652: Missing Authorization

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...

PT-2026-81265

Name of the Vulnerable Software and Affected Versions Red Hat Build of Keycloak affected versions not specified Description A flaw exists in the JWT Bearer authorization grant implementation within the keycloak-services component, which manages OAuth2 and OpenID Connect grant types for access tok...

PT-2026-81990

A vulnerability was found in Keycloak. This flaw allows attackers to bypass brute force protection by exploiting the timing of login attempts. By initiating multiple login requests simultaneously, attackers can exceed the configured limits for failed attempts before the system locks them out. Thi...