Security advisory

{
  "id": "f708a1f9f41945a0df4970494796b94170a7a8f7c0810035433b159c08ed0558",
  "url": "https://osv.dev/vulnerability/CVE-2019-6503",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-6503",
    "summary": "There is a deserialization vulnerability in Chatopera cosin v3.10.0. An attacker can execute commands during server-side deserialization by uploading maliciously constructed files. This is related to the TemplateController.java impsave method and the MainUtils toObject method.",
    "evidence": "osv:CVE-2019-6503",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-6503",
      "aliases": [
        "CVE-2019-6503"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cskefu/cskefu",
              "type": "GIT",
              "events": [
                {
                  "introduced": "26ddc81aa86d006509b569e9d331631be8568bec"
                },
                {
                  "last_affected": "26ddc81aa86d006509b569e9d331631be8568bec"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:chatopera:cosin:3.10.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.10.0"
                      },
                      {
                        "last_affected": "3.10.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-6503.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:41.419106075Z",
      "provider": "osv",
      "references": [
        "https://github.com/chatopera/cosin/issues/177"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-6503",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382764,
  "published_at": "2019-01-22T14:29:00.563+00:00"
}