Security advisory

{
  "id": "082afa834859e116a6d63ab29faf6c87247e7e0f86954e749584653da871ea66",
  "url": "https://osv.dev/vulnerability/CVE-2023-49105",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-49105",
    "summary": "An issue was discovered in ownCloud owncloud/core before 10.13.1. An attacker can access, modify, or delete any file without authentication if the username of a victim is known, and the victim has no signing-key configured. This occurs because pre-signed URLs can be accepted even when no signing-key is configured for the owner of the files. The earliest affected version is 10.6.0.",
    "evidence": "osv:CVE-2023-49105",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2023-49105",
      "aliases": [
        "CVE-2023-49105"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/owncloud/core",
              "type": "GIT",
              "events": [
                {
                  "introduced": "94282d9471e5c786602af512e7207aed6b6e3f8f"
                },
                {
                  "fixed": "d06b1d870377662dd9ff327485acc2d3e1991bcb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:owncloud:owncloud_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "10.6.0"
                      },
                      {
                        "fixed": "10.13.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-49105.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:21.058904509Z",
      "provider": "osv",
      "references": [
        "https://owncloud.org/security",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-49105",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49105.json",
        "https://hunt.io/blog/chinese-speaking-operator-philippine-nuclear-naval-contractor",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-49105",
        "https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49105.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-49105",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 487340,
  "published_at": "2023-11-21T00:00:00+00:00"
}