CVE-2026-86828

{
  "etk_id": "ETK-2026-1354",
  "cve_id": "CVE-2026-86828",
  "display_id": "CVE-2026-86828",
  "ghsa_id": "GHSA-5547-r7f3-wccc",
  "euvd_id": "EUVD-2026-94749",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Archive path traversal in BackWPup backup restore",
  "summary": "BackWPup versions before 5.7.7 mishandle archive entry destinations during backup restoration when the fallback archive library is used. A high-privileged user able to perform such a restore may write files outside the restore directory and potentially achieve code execution.",
  "mitigation": "Upgrade BackWPup to version 5.7.7 or later. Restrict backup-restore privileges to trusted administrators until the upgrade is complete.",
  "vendor": null,
  "product": "BackWPup",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 5.7.7"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "5.7.7"
      ],
      "package_name": "BackWPup",
      "purl": null
    }
  ],
  "cwes": [
    22
  ],
  "cvss_score": 6.6,
  "cvss_src": "nvd",
  "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0042,
  "epss_percentile": 0.3529,
  "epss_asof": "2026-10-21",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 36.251019883333335,
  "t0_at": "2026-10-08T06:00:08.185000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-12T12:59:05.361127+00:00",
      "days": 4.290939538506945,
      "is_lower_bound": false,
      "measured_at": "2026-10-08T06:00:08.185000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-08T06:00:08.185000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-08T06:00:08.185000+00:00",
      "url": "https://github.com/advisories/GHSA-5547-r7f3-wccc"
    }
  }
}