CVE-2026-107569

{
  "etk_id": "ETK-2026-2081",
  "cve_id": "CVE-2026-107569",
  "display_id": "CVE-2026-107569",
  "ghsa_id": "GHSA-95hv-g278-w9p8",
  "euvd_id": "EUVD-2026-104409",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unchecked loop-condition input in hMailServer",
  "summary": "hMailServer versions 6.0.0 through 6.3.6 can mishandle externally supplied mail-loop state. A remote unauthenticated sender may cause generated mail to recur until mail queues or storage disrupt service, when configured forwarding, reply, redirect, or similar automation forms a mail-generation cycle.",
  "mitigation": "Upgrade hMailServer to version 6.3.7. Until the upgrade is complete, disable or restrict mail-processing rules and Sieve actions that can generate forwarding or automated-response cycles, and monitor queue and disk consumption.",
  "vendor": "Progressive Robot Ltd",
  "product": "hMailServer",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 6.0.0, <= 6.3.6"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "hMailServer",
      "purl": null
    }
  ],
  "cwes": null,
  "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": 0.0037,
  "epss_percentile": 0.2971,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 36.6961394,
  "t0_at": "2026-10-19T15:34:37.492000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-19T15:34:37.492000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T15:34:37.492000+00:00",
      "url": "https://github.com/advisories/GHSA-95hv-g278-w9p8"
    }
  }
}