CVE-2026-87743
A flaw was found in Quarkus HTTP security. An unauthenticated attacker can exploit a discrepancy in how paths are normalized between the security matcher and HTTP request dispatchers. This allows the attacker to craft a URL that the security matcher considers public, but which is then routed to a protected endpoint, leading to an authorization bypass and potential unauthorized access to sensitive information.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.52%
- Percentil entre todas las CVEs puntuadas: 42
- 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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access85 % - Impacto principal
T1078Valid Accountsstealth · persistence · privilege escalation · initial access75 %
Vulnerabilidad de bypass de autenticación en aplicación web expuesta (Quarkus) accesible sin autenticación previa. Permite acceso no autorizado a información sensible mediante normalización de rutas.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-551
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-87743",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-87743",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-09-22T14:15:59.292451Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"cpes": [
"cpe:/a:redhat:exploit_intelligence:0"
],
"vendor": "Red Hat",
"product": "Exploit Intelligence",
"packageName": "exploit-intelligence/agent-client-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:serverless:1"
],
"vendor": "Red Hat",
"product": "OpenShift Serverless",
"packageName": "openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:serverless:1"
],
"vendor": "Red Hat",
"product": "OpenShift Serverless",
"packageName": "openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:serverless:1"
],
"vendor": "Red Hat",
"product": "OpenShift Serverless",
"packageName": "openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:serverless:1"
],
"vendor": "Red Hat",
"product": "OpenShift Serverless",
"packageName": "openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:serverless:1"
],
"vendor": "Red Hat",
"product": "OpenShift Serverless",
"packageName": "openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:serverless:1"
],
"vendor": "Red Hat",
"product": "OpenShift Serverless",
"packageName": "openshift-serverless-1/kn-eventing-integrations-aws-sqs-source-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:serverless:1"
],
"vendor": "Red Hat",
"product": "OpenShift Serverless",
"packageName": "openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:serverless:1"
],
"vendor": "Red Hat",
"product": "OpenShift Serverless",
"packageName": "openshift-serverless-1/kn-eventing-integrations-timer-source-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:camel_quarkus:3"
],
"vendor": "Red Hat",
"product": "Red Hat build of Apache Camel 4 for Quarkus 3",
"packageName": "quarkus-vertx-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:apicurio_registry:3"
],
"vendor": "Red Hat",
"product": "Red Hat build of Apicurio Registry 3",
"packageName": "quarkus-vertx-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:debezium:3"
],
"vendor": "Red Hat",
"product": "Red Hat build of Debezium 3",
"packageName": "quarkus-vertx-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:"
],
"vendor": "Red Hat",
"product": "Red Hat Build of Keycloak",
"packageName": "keycloak/rhbk-openshift-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:"
],
"vendor": "Red Hat",
"product": "Red Hat Build of Keycloak",
"packageName": "keycloak/rhbk-rhel9-operator",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:"
],
"vendor": "Red Hat",
"product": "Red Hat Build of Keycloak",
"packageName": "quarkus-vertx-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:"
],
"vendor": "Red Hat",
"product": "Red Hat Build of Keycloak",
"packageName": "rhbk/keycloak-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"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": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:jboss_fuse:7"
],
"vendor": "Red Hat",
"product": "Red Hat Fuse 7",
"packageName": "quarkus-vertx-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:openshift_ai"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift AI (RHOAI)",
"packageName": "rhoai/odh-trustyai-service-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:openshift_devspaces:3"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Dev Spaces",
"packageName": "devspaces/multicluster-redirector-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-18T10:17:07.520",
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2026:69440",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:69470",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-87743",
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2530523",
"source": "secalert@redhat.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-551"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Quarkus HTTP security. An unauthenticated attacker can exploit a discrepancy in how paths are normalized between the security matcher and HTTP request dispatchers. This allows the attacker to craft a URL that the security matcher considers public, but which is then routed to a protected endpoint, leading to an authorization bypass and potential unauthorized access to sensitive information."
}
],
"lastModified": "2026-09-22T15:17:20.107",
"sourceIdentifier": "secalert@redhat.com"
}