ETK-2026-3143Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-3143",
  "cve_id": null,
  "display_id": "ETK-2026-3143",
  "ghsa_id": "GHSA-cx7m-cfcg-xpp8",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Uncontrolled recursion in Postrust query parsing",
  "summary": "Postrust deployments using affected postrust-core, postrust-server, or postrust-worker releases can exhaust a server thread's stack while parsing deeply nested query expressions. A network-reachable client can cause the API process or execution environment to terminate, resulting in denial of service, without needing a token.",
  "mitigation": "Upgrade postrust-core and postrust-server to 2.4.1, and postrust-worker to 1.0.1. Until upgrades are complete, configure the proxy or gateway to reject query strings with more than 64 opening parentheses, including percent-encoded forms.",
  "vendor": "rust",
  "product": "rust:postrust-core",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 2.4.0"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "2.4.1"
      ],
      "package_name": "postrust-core",
      "purl": "pkg:cargo/postrust-core"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 2.4.0"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "2.4.1"
      ],
      "package_name": "postrust-server",
      "purl": "pkg:cargo/postrust-server"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 2.4.0"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "1.0.1"
      ],
      "package_name": "postrust-worker",
      "purl": "pkg:cargo/postrust-worker"
    }
  ],
  "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": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 15.95904525,
  "t0_at": null,
  "signals": {
    "check": {
      "at": "2026-10-31T05:15:25.359431+00:00",
      "days": -1.069232823414352,
      "is_lower_bound": true,
      "measured_at": "2026-11-01T06:55:07.160334+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-30T18:28:05+00:00",
      "days": -1.5187740205324074,
      "is_lower_bound": true,
      "measured_at": "2026-11-01T06:55:07.160334+00:00",
      "url": "https://github.com/postrust/postrust/security/advisories/GHSA-cx7m-cfcg-xpp8"
    }
  }
}