CVE-2026-61619

{
  "etk_id": "ETK-2026-4198",
  "cve_id": "CVE-2026-61619",
  "display_id": "CVE-2026-61619",
  "ghsa_id": "GHSA-f5qm-3h4p-8qhg",
  "euvd_id": "EUVD-2026-123632",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Regular-expression denial of service in coreruleset",
  "summary": "coreruleset versions earlier than 3.3.10, 4.25.1, or 4.28.0 contain vulnerable Unix command-detection regular expressions. An unauthenticated remote requester can cause elevated CPU use and may make affected WAF rules fail to detect a request, provided the rules are deployed with a compatible WAF using PCRE2.",
  "mitigation": "Upgrade coreruleset to 3.3.10, 4.25.1, or 4.28.0, as appropriate for the deployed release line. Until upgraded, restrict request-body and argument lengths to reduce exposure.",
  "vendor": "coreruleset",
  "product": "coreruleset",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 4.27.0"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "4.28.0"
      ],
      "package_name": "coreruleset",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 4.25.0"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "4.25.1"
      ],
      "package_name": "coreruleset",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 3.3.9"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "3.3.10"
      ],
      "package_name": "coreruleset",
      "purl": null
    }
  ],
  "cwes": [
    1333
  ],
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 20.54107198333333,
  "t0_at": "2026-11-11T17:32:41.641000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-11T18:41:16.137021+00:00",
      "days": 0.047621481724537035,
      "is_lower_bound": false,
      "measured_at": "2026-11-11T17:32:41.641000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-11T17:32:41.641000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-11T17:32:41.641000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-61619"
    }
  }
}