{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.6.0"
              },
              {
                "fixed": "4.3.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "6402cd6e2a075ec827aa13ae1814a5e2d28a6ff5"
            },
            {
              "fixed": "93982e26107c44d502ad5d9274a77f7c6da5ba27"
            }
          ],
          "repo": "https://github.com/nextcloud/collectives",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-8mpv-ggq8-hf3w"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45154.json"
  },
  "details": "Nextcloud is an open source content collaboration platform. From version 2.6.0 to before version 4.3.0, when a previous collective pages was deleted and the collective was shared view-only, guests with access to the collective were able to access the deleted pages directly from the trashbin. This issue has been patched in version 4.3.0.",
  "id": "CVE-2026-45154",
  "modified": "2026-08-04T11:30:57.243717052Z",
  "published": "2026-06-01T16:37:41.710Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/3521434"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45154.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8mpv-ggq8-hf3w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45154"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nextcloud/collectives/pull/2432"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Nextcloud: Improper Access Control in Collectives"
}