« Volver al listado

CVE-2026-88021

Estado: Pendiente de análisisAlta (7.1)—

Consul and Consul Enterprise are vulnerable to an authorization bypass in the Connect service mesh that may allow a service to reach a destination it is not authorized to access. When building Envoy RBAC rules to enforce Connect intentions, Consul did not correctly escape certain characters in service names, namespaces, and partitions, causing the generated authorization rules to match more broadly than intended. This vulnerability (CVE-2026-88021) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.

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.

Vulnerabilidad de bypass de autorización en servicio de malla (Consul Connect) accesible por red con privilegios (PR:L). Impacto: acceso a recursos no autorizado (T1078.003) y potencial exposición de datos internos (T1552.007) mediante reglas RBAC mal escapadas.

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 ManagementUser Account ManagementNetwork SegmentationVulnerability ScanningThreat Intelligence ProgramPassword Policies

Tecnologías afectadas (2)

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

Hashicorp — ConsulAIHashicorp — Consul EnterpriseAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-88021",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-88021",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-10T19:21:28.142705Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@hashicorp.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@hashicorp.com",
      "affectedData": [
        {
          "repo": "https://github.com/hashicorp/consul-enterprise/",
          "vendor": "HashiCorp",
          "product": "Consul",
          "versions": [
            {
              "status": "affected",
              "version": "1.9.0",
              "lessThan": "2.0.4",
              "versionType": "semver"
            }
          ],
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://github.com/hashicorp/consul-enterprise/",
          "vendor": "HashiCorp",
          "product": "Consul Enterprise",
          "versions": [
            {
              "status": "affected",
              "changes": [
                {
                  "at": "1.21.18",
                  "status": "unaffected"
                },
                {
                  "at": "1.22.12",
                  "status": "unaffected"
                }
              ],
              "version": "1.9.0",
              "lessThan": "2.0.4",
              "versionType": "semver"
            }
          ],
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-10T19:17:39.250",
  "references": [
    {
      "url": "https://discuss.hashicorp.com/t/hcsec-2026-37-consul-vulnerable-to-an-authorization-bypass-in-the-connect-service-mesh/77739",
      "source": "security@hashicorp.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@hashicorp.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-185"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Consul and Consul Enterprise are vulnerable to an authorization bypass in the Connect service mesh that may allow a service to reach a destination it is not authorized to access. When building Envoy RBAC rules to enforce Connect intentions, Consul did not correctly escape certain characters in service names, namespaces, and partitions, causing the generated authorization rules to match more broadly than intended. This vulnerability (CVE-2026-88021) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4."
    }
  ],
  "lastModified": "2026-09-10T20:17:31.317",
  "sourceIdentifier": "security@hashicorp.com"
}