{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0.9.0-beta.1"
              },
              {
                "fixed": "0.9.3"
              }
            ]
          },
          "events": [
            {
              "introduced": "942c7051ab61eca482370149c0459f196bbb56b3"
            },
            {
              "fixed": "e33e28a239d8c4bbed12f73c9edd002e0cfe85bc"
            }
          ],
          "repo": "https://github.com/nextcloud/tables",
          "type": "GIT"
        },
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.8.6"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3ea4977dfb54b89e9195b8e20cc32965812fd522"
            }
          ],
          "repo": "https://github.com/nextcloud/tables",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-w787-vwqp-8wr7"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66551.json"
  },
  "details": "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.",
  "id": "CVE-2025-66551",
  "modified": "2026-04-01T23:09:16.006412410Z",
  "published": "2025-12-05T17:15:16.927Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/3137895"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66551.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-w787-vwqp-8wr7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66551"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nextcloud/tables/commit/39f24a62fb41fd7a8bda65325f8bbafdc91c731c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nextcloud/tables/pull/1810"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Nextcloud Tables is missing an ownership check which allows moving columns into tables of other users"
}