CVE-2026-6959

{
  "id": "CVE-2026-6959",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-12T20:16:46.267",
  "lastModified": "2026-10-26T17:10:03.270",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "HashiCorp Nomad and Nomad Enterprise prior to 2.0.1 are vulnerable to arbitrary file read and write on the client host as the Nomad process user through a symlink attack. This vulnerability (CVE-2026-6959) is fixed in Nomad 2.0.1, 1.11.5 and 1.10.11."
    },
    {
      "lang": "es",
      "value": "HashiCorp Nomad y Nomad Enterprise anteriores a 2.0.1 son vulnerables a la lectura y escritura arbitraria de archivos en el host cliente como el usuario del proceso de Nomad a través de un ataque de enlace simbólico. Esta vulnerabilidad (CVE-2026-6959) está corregida en Nomad 2.0.1, 1.11.5 y 1.10.11."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "HashiCorp",
          "product": "Nomad",
          "defaultStatus": "unaffected",
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "repo": "https://github.com/hashicorp/nomad",
          "versions": [
            {
              "version": "0.9.0",
              "lessThan": "2.0.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "HashiCorp",
          "product": "Nomad Enterprise",
          "defaultStatus": "unaffected",
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "repo": "https://github.com/hashicorp/nomad",
          "versions": [
            {
              "version": "0.9.0",
              "lessThan": "2.0.1",
              "versionType": "semver",
              "status": "affected",
              "changes": [
                {
                  "at": "1.11.5",
                  "status": "unaffected"
                },
                {
                  "at": "1.10.11",
                  "status": "unaffected"
                }
              ]
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N",
          "baseScore": 6.0,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.5,
        "impactScore": 4.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-12T20:14:14.584948Z",
          "id": "CVE-2026-6959",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://discuss.hashicorp.com/t/hcsec-2026-14-nomad-arbitrary-file-read-write-on-client-host-through-symlink-attack/77416",
      "source": "[email protected]"
    }
  ]
}