CVE-2026-100638

{
  "etk_id": "ETK-2026-263",
  "cve_id": "CVE-2026-100638",
  "display_id": "CVE-2026-100638",
  "ghsa_id": "GHSA-6gvc-7gr4-55rh",
  "euvd_id": "EUVD-2026-87732",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Path traversal in SiYuan setNotebookIcon",
  "summary": "SiYuan versions before v3.8.4 allow path traversal through the setNotebookIcon endpoint. An authenticated administrator can create directories and write a conf.json file outside the workspace in locations writable by the kernel process.",
  "mitigation": "Upgrade github.com/siyuan-note/siyuan to v3.8.4 or later. Restrict administrator API access until the upgrade is complete.",
  "vendor": "go",
  "product": "go:github.com/siyuan-note/siyuan",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 3.8.3"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        "v3.8.4"
      ],
      "package_name": "github.com/siyuan-note/siyuan",
      "purl": "pkg:golang/github.com/siyuan-note/siyuan"
    }
  ],
  "cwes": [
    22
  ],
  "cvss_score": 7.6,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L",
  "epss_score": 0.0047,
  "epss_percentile": 0.3968,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 21.009984583333335,
  "t0_at": "2026-09-26T13:23:11.930000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-09-10T14:10:07+00:00",
      "days": -15.967418171296297,
      "is_lower_bound": false,
      "measured_at": "2026-09-26T13:23:11.930000+00:00",
      "url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-6h8x-6mph-7438"
    },
    "trigger_signal": {
      "at": "2026-09-26T13:23:11.930000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-26T13:23:11.930000+00:00",
      "url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-6h8x-6mph-7438"
    }
  }
}