CVE-2026-110240

Estado: Pendiente de análisisMedia (6.3)—

Gravedad6.3Media · CVSS 4.0

Probabilidad de explotación0.33 %mayor que el 25 % de las CVE

Explotación activaNono figura en el catálogo de CISA

Exploit públicoNo conocidosin código público localizado

Lancet hasta la versión 2.3.9 contiene una vulnerabilidad de elusión de la protección contra SSRF en netutil.IsInternalIP que clasifica erróneamente como externas las direcciones IPv6 privadas, de enlace local, CGNAT y de transición. Los atacantes pueden proporcionar nombres de host que se resuelven a estas formas de direcciones, incluidas NAT64, 6to4 o Teredo que incorporan IPv4 interna, para acceder a servicios internos o a los endpoints de metadatos de la nube.

Traducción automática del texto original de NVD (en inglés).

CVSS

Puntuación base: 6.3
Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.33 %
Percentil entre todas las CVEs puntuadas: 25
Fecha de la puntuación: 22/10/2026

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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access90 %
Impacto principalT1090 Proxycommand and control80 %
Impacto secundarioT1552.005 Cloud Instance Metadata APIcredential access60 %

Vector AV:N/PR:N/UI:N indica explotación remota sin credenciales; el bypass SSRF en IsInternalIP permite alcanzar servicios internos y endpoints de metadatos cloud.

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

Filter Network Traffic Limit Access to Resource Over Network Vulnerability Scanning SSL/TLS Inspection Privileged Account Management Network Segmentation

Tecnologías afectadas (1)

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

Lancet — Lancet^AI

CWE

CWE-918

Referencias

Mostrar las 8 referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-110240",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-110240",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-13T19:24:08.615533Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "disclosure@vulncheck.com",
        "cvssData": {
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          "version": "3.1",
          "baseScore": 4.8,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 2.2
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
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        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 6.3,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "disclosure@vulncheck.com",
      "affectedData": [
        {
          "repo": "https://github.com/duke-git/lancet",
          "vendor": "duke-git",
          "product": "lancet",
          "versions": [
            {
              "status": "affected",
              "version": "2.1.2",
              "versionType": "semver",
              "lessThanOrEqual": "2.3.9"
            }
          ],
          "packageURL": "pkg:golang/github.com/duke-git/lancet/v2",
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://github.com/duke-git/lancet",
          "vendor": "duke-git",
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          "versions": [
            {
              "status": "affected",
              "version": "1.3.1",
              "versionType": "semver",
              "lessThanOrEqual": "1.4.6"
            }
          ],
          "packageURL": "pkg:golang/github.com/duke-git/lancet",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-10-13T19:18:49.350",
  "references": [
    {
      "url": "https://github.com/duke-git/lancet",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/duke-git/lancet/blob/v1.4.6/netutil/net.go#L158-L170",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/duke-git/lancet/blob/v2.3.9/netutil/net.go#L192-L205",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/duke-git/lancet/commit/835111c832939a85416d686a1e99d5fe7060c9b4",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/duke-git/lancet/issues/356",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/duke-git/lancet/pull/357",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/lancet-through-2.3.9-ssrf-protection-bypass-via-netutil-isinternalip",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/duke-git/lancet/issues/356",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Lancet through 2.3.9 contains an SSRF protection bypass vulnerability in netutil.IsInternalIP that misclassifies IPv6 private, link-local, CGNAT and transition addresses as external. Attackers can supply hostnames resolving to these address forms, including NAT64, 6to4 or Teredo embedding internal IPv4, to reach internal services or cloud metadata endpoints."
    }
  ],
  "lastModified": "2026-10-13T20:17:28.220",
  "sourceIdentifier": "disclosure@vulncheck.com"
}