Security advisory

{
  "id": "c83b284581f5545869b3914341421dbd44a195237ea9eb08745b022b238b8e9c",
  "url": "https://osv.dev/vulnerability/CVE-2020-11807",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-11807",
    "summary": "Because of Unrestricted Upload of a File with a Dangerous Type, Sourcefabric Newscoop 4.4.7 allows an authenticated user to execute arbitrary PHP code (and sometimes terminal commands) on a server by making an avatar update and then visiting the avatar file under the /images/ path.",
    "evidence": "osv:CVE-2020-11807",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-11807",
      "aliases": [
        "CVE-2020-11807"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sourcefabric/newscoop",
              "type": "GIT",
              "events": [
                {
                  "introduced": "48e8df0054ed66af44f0d0206d233d96457a2f48"
                },
                {
                  "last_affected": "48e8df0054ed66af44f0d0206d233d96457a2f48"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:sourcefabric:newscoop:4.4.7:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.4.7"
                      },
                      {
                        "last_affected": "4.4.7"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.4.7"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-11807.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:24.168725924Z",
      "provider": "osv",
      "references": [
        "https://github.com/sourcefabric/Newscoop/blob/3df835637609a5a42530b2a4611177c634ad6274/newscoop/library/Newscoop/Image/ImageService.php#L226",
        "https://gist.github.com/V-Rico/82e9e52ac451dc20eef87b0999b3b1ee"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-11807",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382546,
  "published_at": "2020-05-19T16:15:11.167+00:00"
}