CVE-2026-1180
A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
- Puntuación base: 5.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.41%
- Percentil entre todas las CVEs puntuadas: 33
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-918
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-1180",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-1180",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-01-20T16:20:50.106348Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 5.8,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
},
"impactScore": 1.4,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"vendor": "Red Hat",
"product": "Red Hat build of Keycloak 26.4",
"versions": [
{
"status": "unaffected",
"version": "26.4.11-1",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhbk/keycloak-operator-bundle",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"vendor": "Red Hat",
"product": "Red Hat build of Keycloak 26.4",
"versions": [
{
"status": "unaffected",
"version": "26.4-14",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhbk/keycloak-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"vendor": "Red Hat",
"product": "Red Hat build of Keycloak 26.4",
"versions": [
{
"status": "unaffected",
"version": "26.4-14",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhbk/keycloak-rhel9-operator",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"vendor": "Red Hat",
"product": "Red Hat build of Keycloak 26.4.11",
"packageName": "rhbk/keycloak-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:"
],
"vendor": "Red Hat",
"product": "Red Hat Build of Keycloak",
"packageName": "rhbk/keycloak-operator-bundle",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:"
],
"vendor": "Red Hat",
"product": "Red Hat Build of Keycloak",
"packageName": "rhbk/keycloak-rhel9-operator",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8"
],
"vendor": "Red Hat",
"product": "Red Hat JBoss Enterprise Application Platform 8",
"packageName": "keycloak-services",
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/a:redhat:jbosseapxp"
],
"vendor": "Red Hat",
"product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
"packageName": "keycloak-services",
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7"
],
"vendor": "Red Hat",
"product": "Red Hat Single Sign-On 7",
"packageName": "keycloak-services",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-01-20T13:16:03.003",
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2026:6477",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:6478",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-1180",
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430781",
"source": "secalert@redhat.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-918"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk."
},
{
"lang": "es",
"value": "Se identificó un fallo en la característica de registro dinámico de clientes de OpenID Connect de Keycloak cuando los clientes se autentican usando private_key_jwt. El problema permite a un cliente especificar una jwks_uri arbitraria, que Keycloak luego recupera sin validar el destino. Esto permite a los atacantes forzar al servidor de Keycloak a realizar solicitudes HTTP a recursos de red internos o restringidos. Como resultado, los atacantes pueden sondear servicios internos y puntos finales de metadatos en la nube, creando un riesgo de revelación de información y reconocimiento."
}
],
"lastModified": "2026-06-17T10:15:16.857",
"sourceIdentifier": "secalert@redhat.com"
}