CVE-2026-49332

Estado: Pendiente de análisisAlta (8.5)—

A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys (X-Forwarded-User) but does not strip underscore-variant keys (X_Forwarded_User) from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing an authenticated low-privilege user to smuggle a forged identity that may override the legitimate authenticated identity in the upstream application.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Puntuación base: 8.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.53%
Percentil entre todas las CVEs puntuadas: 43
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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1078 Valid Accountsstealth · persistence · privilege escalation · initial access80 %
Impacto secundarioT1556 Modify Authentication Processdefense impairment · persistence · credential access75 %

Acceso remoto a servicios con privilegios (PR:L, red, CVSS 7.5), permitiendo suplantación de identidad autenticada y falsificación de encabezados de autenticación en aplicaciones upstream (CWE-436: violación de confianza de límites).

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

Privileged Account Management User Account Management Password Policies Multi-factor Authentication Application Developer Guidance Active Directory Configuration

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Openshift — Oauth-proxy^AI

CWE

CWE-436

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-49332",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49332",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-28T13:02:35.727357Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secalert@redhat.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 3.1
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.12::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.12",
          "versions": [
            {
              "status": "unaffected",
              "version": "1786458704",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.13::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.13",
          "versions": [
            {
              "status": "unaffected",
              "version": "1786477436",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.14::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.14",
          "versions": [
            {
              "status": "unaffected",
              "version": "1785549818",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.15::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.15",
          "versions": [
            {
              "status": "unaffected",
              "version": "1787054100",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.16::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.16",
          "versions": [
            {
              "status": "unaffected",
              "version": "1785544039",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.17::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.17",
          "versions": [
            {
              "status": "unaffected",
              "version": "1787543313",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.18::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.18",
          "versions": [
            {
              "status": "unaffected",
              "version": "1785529735",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.19::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.19",
          "versions": [
            {
              "status": "unaffected",
              "version": "1785521728",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.20::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.20",
          "versions": [
            {
              "status": "unaffected",
              "version": "1785833742",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.21::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.21",
          "versions": [
            {
              "status": "unaffected",
              "version": "1785851359",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4.22::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4.22",
          "versions": [
            {
              "status": "unaffected",
              "version": "1785885351",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "openshift4/ose-oauth-proxy-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-07-28T13:18:46.067",
  "references": [
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:50681",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:50758",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:51007",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:51013",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:51022",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:51025",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:51038",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:54188",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:54206",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:56912",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:60023",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-49332",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483253",
      "source": "secalert@redhat.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-436"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys (X-Forwarded-User) but does not strip underscore-variant keys (X_Forwarded_User) from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing an authenticated low-privilege user to smuggle a forged identity that may override the legitimate authenticated identity in the upstream application."
    }
  ],
  "lastModified": "2026-09-21T17:17:35.260",
  "sourceIdentifier": "secalert@redhat.com"
}