CVE-2026-1529: fallo de gravedad alta en Red Hat build of Keycloak 26.2
Org.keycloak.services.resources.organizations: keycloak: unauthorized organization registration via improper invitation token validation
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.1epss 0.5%
A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token (JWT) payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an unauthorized organization, leading to unauthorized access.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Productos afectados
Red Hat · Red Hat build of Keycloak 26.2Red Hat · Red Hat build of Keycloak 26.2.13Red Hat · Red Hat build of Keycloak 26.4Red Hat · Red Hat build of Keycloak 26.4.9CVEs relacionadas — Red Hat build of Keycloak 26.2
En el mismo producto, de las más peligrosas a las menos.
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Referencias
https://access.redhat.com/errata/RHSA-2026:2363https://access.redhat.com/errata/RHSA-2026:2364https://access.redhat.com/errata/RHSA-2026:2365https://access.redhat.com/errata/RHSA-2026:2366https://access.redhat.com/security/cve/CVE-2026-1529https://bugzilla.redhat.com/show_bug.cgi?id=2433783https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1529.json