CVE-2026-19688
A flaw was found in the Admin REST API of Keycloak, an identity and access management solution. The Admin API fails to verify the intended a
CVSS
6.8
Medio
EPSS
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KEV
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Exploit Today
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0-100
Publicado: 6 nov 2026 · Última mod.: 6 nov 2026 · CWE-287
Sin historial EPSS suficiente todavía.
A flaw was found in the Admin REST API of Keycloak, an identity and access management solution. The Admin API fails to verify the intended audience of bearer tokens during authentication. This issue allows an attacker who operates a client within a realm to capture an administrator's access token and reuse it to perform unauthorized administrative actions, potentially leading to full realm compromise.
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-973676.4 MED—
———A flaw was found in the Keycloak Account REST API where it incorrectly handles session identification. A malicious client owner can manipulate their own security tokens to point to a different user's active session. This allows the attacker to access and modify the victim's account information, potentially leading to a full account takeover by changing the recovery email and resetting the password.4hCVE-2026-964474.2 MED—
———A flaw was found in the TokenManager component of Keycloak, an open-source identity and access management solution. The issue occurs during the validation of stateless access tokens when the original user ID no longer exists. Keycloak incorrectly falls back to using the username to identify the user without verifying if the identity matches the original token subject. This could allow an attacker with an old token to gain access to a newly created service account if it shares the same client ID as a previously deleted one.4hCVE-2026-1109559.8 CRÍ—
———The Wurdey WordPress plugin through 1.0.0 does not verify a request signature before logging a user in, allowing unauthenticated attackers to authenticate as an administrator knowing only the administrator's username.2hCVE-2026-492728.5 ALT—
———OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. From 3.3.0 until 4.0.1, OAuthLib's RFC 8628 device workflow does not require DeviceCodeGrant.validate_token_request to check that the device_code parameter is present and valid. A caller whose client request is accepted by the configured validator and who knows a valid client ID enabled for the device workflow can submit a missing or bogus device code to the token endpoint and obtain a bearer token without completing device authorization. This issue is fixed in version 4.0.1.17hCVE-2026-978477.1 ALT—
——0A flaw was found in the protocol mapper and identity resolution components of Keycloak. The issue occurs when a client manager uses hardcoded-claim mappers to override identity claims in sessionless service-account tokens. Because these tokens lack a session ID, Keycloak may incorrectly resolve the token bearer as a different, highly privileged user based on the manipulated claims. This can allow an attacker with limited client management permissions to impersonate a realm administrator and gain full control over the realm.4hCVE-2026-971758.8 ALT—
——0A flaw was found in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The issue occurs when Keycloak automatically links an incoming identity from an external provider to an existing local account based on an email address without verifying if the provider has validated that email. This can allow an attacker to take over a victim's account by using a matching unverified email address at a brokered provider.4h