gonic before 0.22.0 Missing Administrator Check on the Subsonic startScan Endpoint

{
  "id": "f21fe261239deb212bff2e45c75ea926b935f8113851a3274fa9bdc2bca2f7cc",
  "url": "https://osv.dev/vulnerability/CVE-2026-86118",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "gonic before 0.22.0 Missing Administrator Check on the Subsonic startScan Endpoint",
    "summary": "gonic versions before 0.22.0 fail to validate administrator privileges in the startScan endpoint, allowing any authenticated user to trigger media library rescans. Attackers can repeatedly call the startScan endpoint to force CPU and I/O-intensive filesystem operations, causing denial of service on multi-user instances.",
    "evidence": "osv:CVE-2026-86118",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-86118",
      "aliases": [
        "CVE-2026-86118",
        "GHSA-453r-pgfw-h3pq"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sentriz/gonic",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5ae99e8af550e4d5cbd45a3b430419d32cb54aed"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.22.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5ae99e8af550e4d5cbd45a3b430419d32cb54aed"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.22.0"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.22.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.21.0",
            "v0.20.1",
            "v0.20.0",
            "v0.19.0",
            "v0.18.0",
            "v0.17.0",
            "v0.16.4",
            "v0.16.3",
            "v0.16.2",
            "v0.16.1",
            "v0.16.0",
            "v0.16.0-rc1",
            "v0.15.2",
            "v0.15.1",
            "v0.15.0",
            "v0.14.0",
            "v0.13.1",
            "v0.13.0",
            "v0.12.3",
            "v0.12.2",
            "v0.12.1",
            "v0.12.0",
            "v0.11.1",
            "v0.11.0",
            "v0.10.3",
            "v0.10.2",
            "v0.10.1",
            "v0.10.0",
            "v0.9.6",
            "v0.9.5",
            "v0.9.4",
            "v0.9.3",
            "v0.9.2",
            "v0.9.1",
            "v0.9.0",
            "v0.8.8",
            "v0.8.7",
            "v0.8.6",
            "v0.8.5",
            "v0.8.4",
            "v0.8.3",
            "v0.8.2",
            "v0.8.1",
            "v0.8.0",
            "v0.7.4",
            "v0.7.3",
            "v0.7.2",
            "v0.7.1",
            "v0.7.0",
            "v0.6.3",
            "v0.6.2",
            "v0.6.1",
            "v0.6.0",
            "v0.5.2",
            "v0.5.1",
            "v0.5.0",
            "v0.4.3",
            "v0.4.2",
            "v0.4.1",
            "v0.4.0",
            "v0.3.0",
            "v0.2.1",
            "v0.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86118.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.101788596Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86118.json",
        "https://github.com/sentriz/gonic/releases/tag/v0.22.0",
        "https://github.com/sentriz/gonic/security/advisories/GHSA-453r-pgfw-h3pq",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-86118",
        "https://www.vulncheck.com/advisories/gonic-before-0.22.0-missing-administrator-check-on-the-subsonic-startscan-endpoint",
        "https://github.com/sentriz/gonic",
        "https://github.com/sentriz/gonic/blob/v0.21.0/server/ctrlsubsonic/ctrl.go",
        "https://github.com/sentriz/gonic/blob/v0.21.0/server/ctrlsubsonic/handlers_common.go"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86118.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-86118",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513320,
  "published_at": "2026-09-05T09:59:08.059+00:00"
}