CVE-2026-3872
Keycloak: keycloak: information disclosure due to redirect_uri validation bypass
Vexday Risk Score
21Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 7.3EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Ciclo de vida
02 abr 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers (URIs) that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information disclosure.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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 26.2.15Red Hat · Red Hat build of Keycloak 26.4Red Hat · Red Hat build of Keycloak 26.4.11¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →Referencias
https://access.redhat.com/errata/RHSA-2026:6475https://access.redhat.com/errata/RHSA-2026:6476https://access.redhat.com/errata/RHSA-2026:6477https://access.redhat.com/errata/RHSA-2026:6478https://access.redhat.com/security/cve/CVE-2026-3872https://bugzilla.redhat.com/show_bug.cgi?id=2445988https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3872.json