Nomad's exec2 task driver vulnerable to arbitrary file read/write on client host through symlink attack

{
  "id": "d34ab28cb6325c0c6dab78cb0fa94a1e789e918eefb0758be7fa93f63a9f16dd",
  "url": "https://osv.dev/vulnerability/CVE-2026-8052",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nomad's exec2 task driver vulnerable to arbitrary file read/write on client host through symlink attack",
    "summary": "HashiCorp Nomad’s exec2 task driver prior to 0.1.2 is vulnerable to arbitrary file read and write on the client host as the Nomad process user through a symlink attack. This vulnerability (CVE-2026-8052) is fixed in version 0.1.2 of the exec2 task driver.",
    "evidence": "osv:CVE-2026-8052",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-8052",
      "aliases": [
        "CVE-2026-8052",
        "GHSA-wqwc-x3rc-2xw6",
        "GO-2026-5718"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hashicorp/nomad-driver-exec2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ba71b1218517685881453282ae443e1351122953"
                },
                {
                  "fixed": "8ea3033ee6a0b5b3fb9a4bbddc88527ddadbd54e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.1.0"
                      },
                      {
                        "fixed": "0.1.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8052.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.383158973Z",
      "provider": "osv",
      "references": [
        "https://discuss.hashicorp.com/t/hcsec-2026-13-nomads-exec2-task-driver-vulnerable-to-arbitrary-file-read-write-on-client-host-through-symlink-attack/77415",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8052.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-8052",
        "https://github.com/hashicorp/nomad-driver-exec2"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-59"
        ],
        "cna_assigner": "HashiCorp",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8052.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-8052",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488709,
  "published_at": "2026-05-12T19:09:15.248+00:00"
}