Nextcloud Tables is missing an ownership check which allows moving columns into tables of other users

{
  "id": "55c27b6174be9847af18028e359cbaad31ec70e063ccf06dad18c39d6a8564a3",
  "url": "https://osv.dev/vulnerability/CVE-2025-66551",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nextcloud Tables is missing an ownership check which allows moving columns into tables of other users",
    "summary": "Nextcloud Tables allows you to create your own tables with individual columns. Prior to 0.8.6 and 0.9.3, a malicious user was able to create their own table and then move a column to a victims table. This vulnerability is fixed in 0.8.6 and 0.9.3.",
    "evidence": "osv:CVE-2025-66551",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-66551",
      "aliases": [
        "CVE-2025-66551",
        "GHSA-w787-vwqp-8wr7"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nextcloud/tables",
              "type": "GIT",
              "events": [
                {
                  "introduced": "84751db259c015adbeced8323a456c20238ab911"
                },
                {
                  "fixed": "3ea4977dfb54b89e9195b8e20cc32965812fd522"
                },
                {
                  "introduced": "903a2312c8885cfe83fe71db18f7c3de47a3dee8"
                },
                {
                  "fixed": "e33e28a239d8c4bbed12f73c9edd002e0cfe85bc"
                },
                {
                  "fixed": "39f24a62fb41fd7a8bda65325f8bbafdc91c731c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nextcloud:tables:*:*:*:*:*:nextcloud:*:*",
                    "range": [
                      {
                        "introduced": "0.4.0"
                      },
                      {
                        "fixed": "0.8.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:nextcloud:tables:*:*:*:*:*:nextcloud:*:*",
                    "range": [
                      {
                        "introduced": "0.9.0"
                      },
                      {
                        "fixed": "0.9.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "39f24a62fb41fd7a8bda65325f8bbafdc91c731c"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.9.2",
            "v0.9.1",
            "v0.8.5",
            "v0.9.0",
            "v0.8.4",
            "v0.8.3",
            "v0.8.2",
            "v0.8.1",
            "v0.8.0-beta.3",
            "v0.8.0-beta.2",
            "v0.8.0-beta.1",
            "v0.7.0",
            "v0.7.0-beta.3",
            "v0.7.0-beta.2",
            "v0.7.0-beta.1",
            "v0.6.0",
            "v0.6.0-beta.4",
            "v0.6.0-beta.3",
            "v0.6.0-beta.2",
            "v0.6.0-beta.1",
            "v0.5.1",
            "v0.5.0",
            "v0.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66551.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.531524420Z",
      "provider": "osv",
      "references": [
        "https://hackerone.com/reports/3137895",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66551.json",
        "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-w787-vwqp-8wr7",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-66551",
        "https://github.com/nextcloud/tables/commit/39f24a62fb41fd7a8bda65325f8bbafdc91c731c",
        "https://github.com/nextcloud/tables/pull/1810"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66551.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-66551",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 490893,
  "published_at": "2025-12-05T17:15:16.927+00:00"
}