CVE-2026-14504

Estado: AnalizadaAlta (8.2)—

An authorization bypass in Nexus Repository 3's component upload API allowed a user with only read/browse privileges on a Swift, Terraform, or Conda hosted repository to upload arbitrary artifacts, bypassing the intended write-permission check.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/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
Puntuación base: 8.2

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.22%
Percentil entre todas las CVEs puntuadas: 11
Fecha de la puntuación: 5/10/2026

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 access85 %
Impacto principalT1078 Valid Accountsstealth · persistence · privilege escalation · initial access75 %
Impacto secundarioT1565.002 Transmitted Data Manipulationimpact70 %

Nexus es un servicio web remoto accesible por red (AV:N) sin autenticación requerida (PR:N). La vulnerabilidad de bypass de autorización permite a usuarios con permisos insuficientes ejecutar acciones de escritura (CWE-862), logrando impersonación de permisos y modificación de artefactos.

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 Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training User Account Management

Tecnologías afectadas (1)

Sonatype — Nexus Repository Manager

CWE

CWE-862

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-14504",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-14504",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-15T14:09:50.086048Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "103e4ec9-0a87-450b-af77-479448ddef11",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 8.2,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/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": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "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": "103e4ec9-0a87-450b-af77-479448ddef11",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.88.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.89.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.90.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.90.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.90.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.90.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.90.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.91.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.91.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.92.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.92.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.92.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.92.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.93.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.93.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:sonatype:nexus_repository_manager:3.93.2:*:*:*:*:*:*:*"
          ],
          "vendor": "Sonatype",
          "product": "Nexus Repository 3",
          "versions": [
            {
              "status": "affected",
              "version": "3.88.0",
              "lessThan": "3.94.0",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-07-14T16:16:45.423",
  "references": [
    {
      "url": "https://help.sonatype.com/en/sonatype-nexus-repository-3-94-0-release-notes.html",
      "tags": [
        "Release Notes"
      ],
      "source": "103e4ec9-0a87-450b-af77-479448ddef11"
    },
    {
      "url": "https://support.sonatype.com/hc/en-us/articles/53137654741907",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "103e4ec9-0a87-450b-af77-479448ddef11"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "103e4ec9-0a87-450b-af77-479448ddef11",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authorization bypass in Nexus Repository 3's component upload API allowed a user with only read/browse privileges on a Swift, Terraform, or Conda hosted repository to upload arbitrary artifacts, bypassing the intended write-permission check."
    }
  ],
  "lastModified": "2026-09-22T17:28:36.823",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sonatype:nexus_repository_manager:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "44F731B4-D06A-4714-809E-BCEDDA220E79",
              "versionEndExcluding": "3.94.0",
              "versionStartIncluding": "3.88.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "103e4ec9-0a87-450b-af77-479448ddef11"
}