ETK-2026-3501Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-3501",
  "cve_id": null,
  "display_id": "ETK-2026-3501",
  "ghsa_id": "GHSA-fmxc-97cw-ph6p",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Regular expression denial of service in dateparser",
  "summary": "dateparser versions before 1.5.0 can consume excessive CPU while parsing specially structured, attacker-controlled input. An attacker can cause denial of service when an application passes untrusted strings to the affected date parsing APIs; ordinary-length date strings are not affected.",
  "mitigation": "Upgrade dateparser to version 1.5.0. If upgrading is not immediately possible, enforce a maximum length for untrusted strings before parsing them.",
  "vendor": "pip",
  "product": "pip:dateparser",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0.7.2, < 1.5.0"
      ],
      "ecosystem": "pip",
      "fixed_versions": [
        "1.5.0"
      ],
      "package_name": "dateparser",
      "purl": "pkg:pypi/dateparser"
    }
  ],
  "cwes": [
    1333
  ],
  "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": 11.64673795,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-11-04T12:44:00+00:00",
      "days": -0.09621848052083333,
      "is_lower_bound": true,
      "measured_at": "2026-11-04T15:02:33.332935+00:00",
      "url": "https://github.com/scrapinghub/dateparser/security/advisories/GHSA-fmxc-97cw-ph6p"
    }
  }
}