ETK-2026-2529Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-2529",
  "cve_id": null,
  "display_id": "ETK-2026-2529",
  "ghsa_id": "GHSA-m9f7-9w4p-gv38",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Filesystem sandbox escape in wasmtime-wasi rename handling",
  "summary": "Affected `wasmtime-wasi` releases on macOS and FreeBSD may let a sandboxed guest access directories available to the host process outside its assigned filesystem area. An attacker must be able to run a guest that has write access within its filesystem sandbox; Linux and Windows deployments are not affected.",
  "mitigation": "Upgrade wasmtime-wasi to 36.0.18, 48.0.6, 49.0.3 or later.",
  "vendor": "rust",
  "product": "rust:wasmtime-wasi",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 36.0.17",
        ">= 37.0.0, <= 48.0.5",
        ">= 49.0.0, <= 49.0.2"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "36.0.18",
        "48.0.6",
        "49.0.3"
      ],
      "package_name": "wasmtime-wasi",
      "purl": "pkg:cargo/wasmtime-wasi"
    }
  ],
  "cwes": [
    61
  ],
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 27.990214783333332,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-10-14T17:23:56+00:00",
      "days": -8.320120145300926,
      "is_lower_bound": true,
      "measured_at": "2026-10-23T01:04:54.407293+00:00",
      "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m9f7-9w4p-gv38"
    }
  }
}