ETK-2026-2889Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-2889",
  "cve_id": null,
  "display_id": "ETK-2026-2889",
  "ghsa_id": "GHSA-8p9w-4prr-vvqh",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Improper ZIP overlap detection in Rust zip",
  "summary": "Rust zip versions before 9.0.3 can incorrectly validate ZIP archives when applications use `ZipArchive::has_overlapping_files()`. An attacker who supplies a crafted archive may bypass overlap checks or cause excessive processing; the application must process the archive and rely on this API for validation.",
  "mitigation": "Upgrade the Rust `zip` package to version 9.0.3 or later. Until upgraded, avoid treating `ZipArchive::has_overlapping_files()` as the sole validation control for untrusted ZIP archives.",
  "vendor": "rust",
  "product": "rust:zip",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 9.0.2"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "9.0.3"
      ],
      "package_name": "zip",
      "purl": "pkg:cargo/zip"
    }
  ],
  "cwes": [
    407
  ],
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 38.32232223333333,
  "t0_at": null,
  "signals": {
    "check": {
      "at": "2026-10-28T18:03:58.627505+00:00",
      "days": -0.1426255226851852,
      "is_lower_bound": true,
      "measured_at": "2026-10-28T21:29:21.530190+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-28T01:58:46+00:00",
      "days": -0.8129105632523148,
      "is_lower_bound": true,
      "measured_at": "2026-10-28T21:29:21.530190+00:00",
      "url": "https://github.com/zip-rs/zip2/security/advisories/GHSA-8p9w-4prr-vvqh"
    }
  }
}