CVE-2026-126613

{
  "etk_id": "ETK-2026-4152",
  "cve_id": "CVE-2026-126613",
  "display_id": "CVE-2026-126613",
  "ghsa_id": "GHSA-68qj-r5q8-pvm5",
  "euvd_id": "EUVD-2026-123326",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Resource exhaustion in hMailServer JSON reader",
  "summary": "hMailServer's JSON reader can allow remote attackers to exhaust memory and worker threads, disrupting mail delivery, webmail, the REST API, and related services. Exposure depends on a reachable JSON-processing path, such as configured TLS-RPT report mailboxes, enabled public REST password-message links, or authenticated webmail and API access; the supplied evidence conflicts on the affected version range.",
  "mitigation": "Upgrade hMailServer to version 6.3.6. Until upgraded, disable the REST API where it is not required and avoid exposing or configuring the affected report-mailbox and public-link entry points where operationally feasible.",
  "vendor": "Progressive Robot Ltd",
  "product": "hMailServer",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 6.3.2, <= 6.3.7"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "6.3.6"
      ],
      "package_name": "hMailServer",
      "purl": null
    }
  ],
  "cwes": [
    770
  ],
  "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": 17.572507333333334,
  "t0_at": "2026-11-11T08:31:12.127000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-11T08:31:12.127000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-11T08:31:12.127000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-126613"
    }
  }
}