Security advisory

{
  "id": "d7931f89af44761e9c3c5997ec6041a11e7bcadcf7302c2f67ca8e3bf15013bd",
  "url": "https://osv.dev/vulnerability/CVE-2021-33828",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-33828",
    "summary": "The files_antivirus component before 1.0.0 for ownCloud mishandles the protection mechanism by which malicious files (that have been uploaded to a public share) are supposed to be deleted upon detection.",
    "evidence": "osv:CVE-2021-33828",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-33828",
      "aliases": [
        "CVE-2021-33828"
      ],
      "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/owncloud/files_antivirus",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7162a8e03c460f2bf122510f3ad4e94ed1bfcb17"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:owncloud:files_antivirus:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.0.0-rc2",
            "v1.0.0-rc1",
            "v1.0.0-beta3",
            "v1.0.0-beta1",
            "v0.11.2",
            "v10.0beta2",
            "v10.0.2RC1",
            "v10.0.2",
            "v10.0.1RC5",
            "v10.0.1RC4",
            "v10.0.1RC3",
            "v10.0.1RC2",
            "v10.0.1RC1",
            "v10.0.1",
            "v10.0.0beta2",
            "v10.0.0RC5",
            "v10.0.0RC4",
            "v10.0.0RC3",
            "v10.0.0RC2",
            "v10.0.0RC1",
            "v10.0.0",
            "v10.0.0beta",
            "v10.0.0alpha",
            "v9.1.0beta2",
            "v9.1.0beta1",
            "v9.1.0RC1",
            "v9.0.0RC1",
            "v9.0beta1",
            "v9.0.0beta2",
            "v8.2RC2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33828.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:18.410782244Z",
      "provider": "osv",
      "references": [
        "https://doc.owncloud.com/server/admin_manual/release_notes.html",
        "https://owncloud.com/security-advisories/cve-2021-33828/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-33828",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429764,
  "published_at": "2022-01-15T21:15:08.953+00:00"
}