CVE-2026-119195

{
  "etk_id": "ETK-2026-2771",
  "cve_id": "CVE-2026-119195",
  "display_id": "CVE-2026-119195",
  "ghsa_id": "GHSA-9m75-vc3g-4x39",
  "euvd_id": "EUVD-2026-113351",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Quadratic-time ASN.1 decoding in pyasn1",
  "summary": "pyasn1 through version 0.6.4 can consume excessive CPU while decoding heavily fragmented constructed string values or indefinite-length ANY values. An attacker can use attacker-controlled ASN.1 input to tie up decoding workers when an application accepts such input through affected decoding paths without effective resource limits.",
  "mitigation": "Upgrade pyasn1 to version 0.6.5 or later. Until upgrades are complete, enforce input-size, decoding-time, and CPU/resource limits for untrusted ASN.1 processing.",
  "vendor": "pip",
  "product": "pyasn1",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 0.6.4"
      ],
      "ecosystem": "pip",
      "fixed_versions": [
        "0.6.5"
      ],
      "package_name": "pyasn1",
      "purl": "pkg:pypi/pyasn1"
    }
  ],
  "cwes": [
    407
  ],
  "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": 19.998066733333335,
  "t0_at": "2026-10-29T19:41:37.352000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-27T06:58:57+00:00",
      "days": -2.5296337037037038,
      "is_lower_bound": false,
      "measured_at": "2026-10-29T19:41:37.352000+00:00",
      "url": "https://github.com/pyasn1/pyasn1/security/advisories/GHSA-9m75-vc3g-4x39"
    }
  }
}