ETK-2026-2763Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-2763",
  "cve_id": null,
  "display_id": "ETK-2026-2763",
  "ghsa_id": "GHSA-qxwv-2vwj-v828",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Malformed email denial of service in parsedmarc",
  "summary": "parsedmarc through 11.0.5 can abort mailbox processing when it encounters a malformed or deeply nested report email, leaving the blocking message in place and preventing later reports from being processed. An attacker who can send email to a DMARC reporting address can disrupt report collection without authentication or user interaction.",
  "mitigation": "Upgrade parsedmarc to version 11.1.0 or later. Until upgraded, restrict who can send to the configured DMARC reporting address and monitor the mailbox for messages that repeatedly stop processing.",
  "vendor": "pip",
  "product": "pip:parsedmarc",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 11.0.5"
      ],
      "ecosystem": "pip",
      "fixed_versions": [
        "11.1.0"
      ],
      "package_name": "parsedmarc",
      "purl": "pkg:pypi/parsedmarc"
    }
  ],
  "cwes": [
    248
  ],
  "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": 10.82747885,
  "t0_at": null,
  "signals": {
    "public_poc": {
      "at": "2026-10-27T02:30:36+00:00",
      "days": -0.6553096315856481,
      "is_lower_bound": true,
      "measured_at": "2026-10-27T18:14:14.799185+00:00",
      "url": "https://github.com/domainaware/parsedmarc/security/advisories/GHSA-qxwv-2vwj-v828"
    },
    "trigger_signal": {
      "at": "2026-10-27T02:30:36+00:00",
      "days": -0.6553096315856481,
      "is_lower_bound": true,
      "measured_at": "2026-10-27T18:14:14.799185+00:00",
      "url": "https://github.com/domainaware/parsedmarc/security/advisories/GHSA-qxwv-2vwj-v828"
    }
  }
}