Security advisory

{
  "id": "35ac989204c3d9a2890f05e7e1a896197e99287c47c798fd22e735ebbc1e8d22",
  "url": "https://osv.dev/vulnerability/CVE-2021-34066",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-34066",
    "summary": "An issue was discovered in EdgeGallery/developer before v1.0. There is a \"Deserialization of yaml file\" vulnerability that can allow attackers to execute system command through uploading the malicious constructed YAML file.",
    "evidence": "osv:CVE-2021-34066",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-34066",
      "aliases": [
        "CVE-2021-34066"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/edgegallery/developer-be",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b7f7ccbcbf10cbd5d2ce8cf602e287d035dbe3e7"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:edgegallery:developer-be:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "Release-v0.9-tag",
            "v0.9-CodeFreeze"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-34066.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:45.420203804Z",
      "provider": "osv",
      "references": [
        "https://github.com/EdgeGallery/developer-be/issues/1"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-34066",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386093,
  "published_at": "2021-08-30T19:15:08.703+00:00"
}