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CVE-2026-18639

Estado: Pendiente de análisisAlta (7.3)—

When Velociraptor is configured to use an OIDC IdP for authentication, it uses the email claim as a username. However, some IdP allow users to change the email claim without verification. Some IdPs do not set the "email_verified" claim and do not actually verify the email.

This allows a user to impersonate another user by setting their email address within the IdP, allowing account takeover.

CVSS

Probabilidad de explotación (EPSS)

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.

UI:R y acceso remoto requiere interacción (cambiar email en IdP). Impacto: suplantación de identidad sin verificación de email permite acceso con credenciales falsas (T1078) y toma de control de cuenta (T1098).

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

User Account ManagementPrivileged Account ManagementMulti-factor AuthenticationApplication Developer GuidanceActive Directory ConfigurationUser Training

Tecnologías afectadas (1)

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

Velociraptor — VelociraptorAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-18639",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-18639",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-11T17:13:54.338948Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@rapid7.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.3,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.1
      }
    ]
  },
  "affected": [
    {
      "source": "cve@rapid7.com",
      "affectedData": [
        {
          "repo": "https://github.com/Velocidex/velociraptor/",
          "vendor": "Rapid7",
          "product": "Velociraptor",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "0.77.2",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-08-11T16:17:30.590",
  "references": [
    {
      "url": "http://docs.velociraptor.app/announcements/advisories/cve-2026-18639/",
      "source": "cve@rapid7.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@rapid7.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-290"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "When Velociraptor is configured to use an OIDC IdP for authentication, it uses the email claim as a username. However, some IdP allow users to change the email claim without verification. Some IdPs do not set the \"email_verified\" claim and do not actually verify the email.\n\nThis allows a user to impersonate another user by setting their email address within the IdP, allowing account takeover."
    }
  ],
  "lastModified": "2026-08-28T21:17:10.720",
  "sourceIdentifier": "cve@rapid7.com"
}