Arcane before 2.0.0 Missing Administrator Authorization on the Compose Template Mutation Endpoints

{
  "id": "2302c4d1db6460847e7da4304871c48f83a8702b0e00fe55efe0aaf50f821d88",
  "url": "https://osv.dev/vulnerability/CVE-2026-86114",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Arcane before 2.0.0 Missing Administrator Authorization on the Compose Template Mutation Endpoints",
    "summary": "Arcane versions before 2.0.0 fail to properly restrict template operations, allowing default user role accounts to create, modify, and delete compose templates including instance-wide defaults. Attackers can inject malicious container configurations with privileged settings or host path mounts that execute with administrative privileges when deployed by administrators.",
    "evidence": "osv:CVE-2026-86114",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-86114",
      "aliases": [
        "CVE-2026-86114"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/getarcaneapp/arcane",
              "type": "GIT",
              "events": [
                {
                  "introduced": "02829b270b7975df32c8d5f787db7345dc6c27ac"
                },
                {
                  "fixed": "2fb3931f6215b3e04f52432336665b8b68dfc990"
                },
                {
                  "fixed": "1500646aa91f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.19.1"
                      },
                      {
                        "fixed": "2.0.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1500646aa91f"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "2fb3931f6215b3e04f52432336665b8b68dfc990"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v2.0.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.20.0",
            "types/v1.20.0",
            "cli/v1.20.0",
            "backend/v1.20.0",
            "v1.19.5",
            "types/v1.19.5",
            "cli/v1.19.5",
            "backend/v1.19.5",
            "v1.19.4",
            "types/v1.19.4",
            "cli/v1.19.4",
            "backend/v1.19.4",
            "v1.19.3",
            "types/v1.19.3",
            "cli/v1.19.3",
            "backend/v1.19.3",
            "v1.19.2",
            "types/v1.19.2",
            "cli/v1.19.2",
            "backend/v1.19.2",
            "v1.19.1",
            "types/v1.19.1",
            "cli/v1.19.1",
            "backend/v1.19.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86114.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.650834576Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86114.json",
        "https://github.com/getarcaneapp/arcane/releases/tag/v2.0.0",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-86114",
        "https://www.vulncheck.com/advisories/arcane-before-2.0.0-missing-administrator-authorization-on-the-compose-template-mutation-endpoints",
        "https://github.com/getarcaneapp/arcane/commit/1500646aa91f",
        "https://github.com/getarcaneapp/arcane",
        "https://github.com/geo-chen/oss/blob/main/arcane.md",
        "https://github.com/getarcaneapp/arcane/blob/v1.19.5/backend/api/handlers/templates.go"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86114.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-86114",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520346,
  "published_at": "2026-09-05T09:59:05.356+00:00"
}