ETK-2026-4142Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-4142",
  "cve_id": null,
  "display_id": "ETK-2026-4142",
  "ghsa_id": "GHSA-66qv-gmq4-qcqj",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Unbounded recursion in rust zip Shrink decompression",
  "summary": "rust zip versions before 9.1.3 can terminate while decoding malicious ZIP archives with the legacy-zip feature enabled. An attacker who can provide an archive for processing may cause a denial of service by exhausting the application's call stack.",
  "mitigation": "Upgrade rust zip to version 9.1.3 or later. Until upgraded, disable the legacy-zip feature or prevent processing of untrusted ZIP archives.",
  "vendor": "rust",
  "product": "rust:zip",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 9.1.2"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "9.1.3"
      ],
      "package_name": "zip",
      "purl": "pkg:cargo/zip"
    }
  ],
  "cwes": [
    674
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 22.881198233333333,
  "t0_at": null,
  "signals": {
    "public_poc": {
      "at": "2026-11-10T20:37:06+00:00",
      "days": -0.5047516809027778,
      "is_lower_bound": true,
      "measured_at": "2026-11-11T08:43:56.611630+00:00",
      "url": "https://github.com/zip-rs/zip2/security/advisories/GHSA-66qv-gmq4-qcqj"
    },
    "trigger_signal": {
      "at": "2026-11-10T20:37:06+00:00",
      "days": -0.5047516809027778,
      "is_lower_bound": true,
      "measured_at": "2026-11-11T08:43:56.611630+00:00",
      "url": "https://github.com/zip-rs/zip2/security/advisories/GHSA-66qv-gmq4-qcqj"
    }
  }
}