Security advisory

{
  "id": "19c96f6eb99b11d17e8930eeee2da82ce2144d30c8e740e040a67d8aac41fe65",
  "url": "https://osv.dev/vulnerability/CVE-2020-8182",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-8182",
    "summary": "Improper access control in Nextcloud Deck 0.8.0 allowed an attacker to reshare boards shared with them with more permissions than they had themselves.",
    "evidence": "osv:CVE-2020-8182",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-8182",
      "aliases": [
        "CVE-2020-8182"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nextcloud/deck",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4f5433374f8a4a4bd525ffca436b4a40c4f8ee0f"
                },
                {
                  "last_affected": "4f5433374f8a4a4bd525ffca436b4a40c4f8ee0f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nextcloud:deck:0.8.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.8.0"
                      },
                      {
                        "last_affected": "0.8.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.8.0",
            "v0.8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8182.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:22.980547574Z",
      "provider": "osv",
      "references": [
        "https://nextcloud.com/security/advisory/?id=NC-SA-2020-025",
        "https://hackerone.com/reports/827816"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-8182",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430814,
  "published_at": "2020-10-05T14:15:13.467+00:00"
}