CVE-2026-107846

{
  "etk_id": "ETK-2026-3534",
  "cve_id": "CVE-2026-107846",
  "display_id": "CVE-2026-107846",
  "ghsa_id": "GHSA-8vv3-6qpc-gpw6",
  "euvd_id": "EUVD-2026-117051",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Merkle-root mutation validation flaw in bitcoinjs-lib",
  "summary": "bitcoinjs-lib versions 2.3.0 through releases before 5.2.1, 6.1.8, and 7.0.2 can accept mutated transaction lists during block-root validation. A peer may cause applications such as explorers, indexers, or SPV clients to treat duplicate transactions as valid or reject a legitimate block. Exposure requires an application to rely on the affected block-root validation when processing peer-provided blocks.",
  "mitigation": "Upgrade bitcoinjs-lib to 5.2.1, 6.1.8, or 7.0.2, as appropriate for the maintained release line. Until upgraded, do not rely solely on the affected library validation for peer-supplied block transaction lists.",
  "vendor": "bitcoinjs",
  "product": "bitcoinjs-lib",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.3.0, < 5.2.1"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "5.2.1"
      ],
      "package_name": "bitcoinjs-lib",
      "purl": "pkg:npm/bitcoinjs-lib"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 6.0.0, < 6.1.8"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "6.1.8"
      ],
      "package_name": "bitcoinjs-lib",
      "purl": "pkg:npm/bitcoinjs-lib"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "= 6.1.0-rc.0"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "6.1.8"
      ],
      "package_name": "bitcoinjs-lib",
      "purl": "pkg:npm/bitcoinjs-lib"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 7.0.0-rc.0, < 7.0.2"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "7.0.2"
      ],
      "package_name": "bitcoinjs-lib",
      "purl": "pkg:npm/bitcoinjs-lib"
    }
  ],
  "cwes": [
    354
  ],
  "cvss_score": 9.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:H/SA:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 11.132726416666667,
  "t0_at": "2026-11-04T19:02:39.453000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-04T19:02:39.453000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-04T19:02:39.453000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-107846"
    }
  }
}