CVE-2026-110385

{
  "etk_id": "ETK-2026-1527",
  "cve_id": "CVE-2026-110385",
  "display_id": "CVE-2026-110385",
  "ghsa_id": "GHSA-4j4f-mq3p-mc2r",
  "euvd_id": "EUVD-2026-100761",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authenticated arbitrary file write in ONLYOFFICE Document Server",
  "summary": "ONLYOFFICE Document Server releases before 10.0 are affected by an arbitrary file-write flaw in the Document Builder API. An attacker with a valid Inbox-compatible JWT can write outside the Builder job directory and potentially change runtime configuration to run operating-system commands as the ds service account when a later Builder job is processed.",
  "mitigation": "Upgrade Document Server to version 10.0 or later. Until upgraded, restrict Document Builder access to only tightly controlled users and services with Inbox-compatible JWTs.",
  "vendor": "ONLYOFFICE",
  "product": "Document Server",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 10.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "10.0"
      ],
      "package_name": "Document Server",
      "purl": null
    }
  ],
  "cwes": [
    73
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0104,
  "epss_percentile": 0.6356,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 126.8641516,
  "t0_at": "2026-10-14T00:24:53.582000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-14T03:18:46.720696+00:00",
      "days": 0.12075392009259259,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T00:24:53.582000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-14T00:24:53.582000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T00:24:53.582000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-110385"
    }
  }
}