AzuraCast: Path Traversal in `currentDirectory` Parameter Enables Remote Code Execution via Media Upload

{
  "id": "28c2f8b593cf956cc0b7c5d9912d334329b4598fa3f0ad70cfe0232498ef4e07",
  "url": "https://osv.dev/vulnerability/CVE-2026-42605",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "AzuraCast: Path Traversal in `currentDirectory` Parameter Enables Remote Code Execution via Media Upload",
    "summary": "AzuraCast is a self-hosted, all-in-one web radio management suite. Prior to version 0.23.6, the currentDirectory request parameter in the Flow.js media upload endpoint (POST /api/station/{station_id}/files/upload) is not sanitized for path traversal sequences. When combined with a local filesystem storage backend (the default), an authenticated user with media management permissions can write arbitrary files outside the station's media storage directory, achieving remote code execution by writing a PHP webshell to the web root. This issue has been patched in version 0.23.6.",
    "evidence": "osv:CVE-2026-42605",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-42605",
      "aliases": [
        "CVE-2026-42605",
        "GHSA-vp2f-cqqp-478j"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/azuracast/azuracast",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "52c8050e3524e0f9867cb319eb87c7e3f3dc11f8"
                },
                {
                  "fixed": "18c793b4427eb49e67a2fea99a89f1c9d9dd808d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:azuracast:azuracast:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.23.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "18c793b4427eb49e67a2fea99a89f1c9d9dd808d"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "52c8050e3524e0f9867cb319eb87c7e3f3dc11f8"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "0.23.6"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.23.5",
            "0.23.4",
            "0.23.3",
            "0.23.2",
            "0.23.1",
            "0.23.0",
            "0.22.1",
            "0.22.0",
            "0.21.0",
            "0.20.4",
            "0.20.3",
            "0.20.2",
            "0.20.1",
            "0.20.0",
            "0.19.7",
            "0.19.6",
            "0.19.5",
            "0.19.4",
            "0.19.3",
            "0.19.2",
            "0.19.1",
            "0.19.0",
            "0.18.5",
            "0.18.3",
            "0.18.2",
            "0.18.1",
            "0.18.0",
            "0.17.7",
            "0.17.6",
            "0.17.5",
            "0.17.4",
            "0.17.3",
            "0.17.2",
            "0.17.1",
            "0.17.0",
            "0.16.1",
            "0.16.0",
            "0.15.2",
            "0.15.1",
            "0.15.0",
            "0.14.1",
            "0.10.2",
            "0.10.1",
            "0.10.0",
            "0.9.9",
            "0.9.8.1",
            "0.9.8",
            "0.9.7.1",
            "0.9.7",
            "0.9.6.5",
            "0.9.6.2",
            "0.9.6.1",
            "0.9.6",
            "0.9.5.1",
            "0.9.5",
            "0.9.4.2",
            "0.9.4.1",
            "0.9.4",
            "0.9.3",
            "0.9.2",
            "0.9.1",
            "0.9.0",
            "0.8.0",
            "0.6.0",
            "0.5.0",
            "0.3.3",
            "0.3.2",
            "0.3.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42605.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:47.255659676Z",
      "provider": "osv",
      "references": [
        "https://github.com/AzuraCast/AzuraCast/releases/tag/0.23.6",
        "https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-vp2f-cqqp-478j",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42605.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42605",
        "https://github.com/AzuraCast/AzuraCast/commit/18c793b4427eb49e67a2fea99a89f1c9d9dd808d"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42605.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-42605",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 515065,
  "published_at": "2026-05-09T19:44:05.893+00:00"
}