Consul-template vulnerable to sandbox path bypass in file helper via a symlink attack

{
  "id": "5b7f842a2e43c058e950c3b6a207a4bc3c9249ed7b5000546228709164f09225",
  "url": "https://osv.dev/vulnerability/CVE-2026-5061",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Consul-template vulnerable to sandbox path bypass in file helper via a symlink attack",
    "summary": "The consul-template library before version 0.42.0 is vulnerable to a sandbox path bypass in the file template helper that may allow reading an out-of-sandbox file. This vulnerability (CVE-2026-5061) is fixed in consul-template 0.42.0.",
    "evidence": "osv:CVE-2026-5061",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-5061",
      "aliases": [
        "BIT-consul-2026-5061",
        "CVE-2026-5061"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hashicorp/consul-template",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b9b30140a200a33734c610302c244abe39fc8477"
                },
                {
                  "fixed": "c1ad4f969318a621c95c87c1efb79f3ef490adb5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.1.0"
                      },
                      {
                        "fixed": "0.42.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.41.4",
            "v0.41.3",
            "v0.41.2",
            "v0.40.0",
            "v0.39.1",
            "v0.39.0",
            "v0.38.1",
            "v0.38.0",
            "v0.37.6",
            "v0.37.5",
            "v0.37.4",
            "v0.37.3",
            "v0.37.2",
            "v0.37.1",
            "v0.37.0",
            "v0.36.0",
            "v0.35.0",
            "v0.34.0",
            "v0.33.0",
            "v0.32.0",
            "v0.31.0",
            "v0.30.0",
            "v0.29.6",
            "v0.29.5",
            "v0.29.4",
            "v0.29.3",
            "v0.29.2",
            "v0.27.2",
            "v0.29.1",
            "v0.29.0",
            "v0.28.0",
            "v0.27.1",
            "v0.27.0",
            "v0.26.0",
            "v0.25.2",
            "v0.25.1",
            "v0.25.0",
            "v0.24.1",
            "v0.24.0",
            "v0.23.0",
            "v0.22.1",
            "v0.22.0",
            "v0.21.3",
            "v0.21.2",
            "v0.21.1",
            "v0.21.0",
            "v0.20.1",
            "v0.20.0",
            "v0.19.5",
            "v0.19.4",
            "v0.19.3",
            "v0.19.2",
            "v0.19.1",
            "v0.19.0",
            "v0.18.5",
            "v0.18.4",
            "v0.18.3",
            "v0.18.2",
            "v0.18.1",
            "v0.18.0",
            "v0.18.0-rc3",
            "v0.18.0-rc1",
            "v0.16.0",
            "v0.16.0-rc1",
            "v0.15.0",
            "v0.14.0",
            "v0.13.0",
            "v0.12.2",
            "v0.12.1",
            "v0.12.0",
            "v0.11.1",
            "v0.11.0",
            "v0.10.0",
            "v0.9.0",
            "v0.8.0",
            "v0.7.0",
            "v0.6.5",
            "v0.6.1",
            "v0.6.0",
            "v0.5.1",
            "v0.5.0",
            "v0.4.0",
            "v0.3.1",
            "v0.3.0",
            "v0.2.0",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5061.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.764390282Z",
      "provider": "osv",
      "references": [
        "https://discuss.hashicorp.com/t/hcsec-2026-12-consul-template-vulnerable-to-sandbox-path-bypass-in-file-helper-through-symlink-attack/77414",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5061.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-5061",
        "https://github.com/hashicorp/consul-template"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-59"
        ],
        "cna_assigner": "HashiCorp",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5061.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-5061",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517972,
  "published_at": "2026-05-12T13:58:20.409+00:00"
}