CVE-2026-115506

{
  "etk_id": "ETK-2026-2495",
  "cve_id": "CVE-2026-115506",
  "display_id": "CVE-2026-115506",
  "ghsa_id": "GHSA-j83x-34mv-v962",
  "euvd_id": "EUVD-2026-108338",
  "status": "published",
  "anchor_state": "anchored",
  "title": "XML entity expansion denial of service in libexpat",
  "summary": "libexpat through 2.9.0 can consume excessive CPU while parsing XML documents with deeply nested entity expansions. An attacker needs the ability to provide XML that the affected application parses.",
  "mitigation": "Restrict parsing of untrusted XML and disable or reject DTD and entity expansion where the application configuration allows it. Apply an upstream fixed release when one is published; no fixed version is recorded in the advisory.",
  "vendor": "libexpat",
  "product": "libexpat",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 2.9.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "libexpat",
      "purl": null
    }
  ],
  "cwes": [
    776
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 13.84029965,
  "t0_at": "2026-10-22T19:14:06.001000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-03-17T13:05:13+00:00",
      "days": -219.25616899305555,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T19:14:06.001000+00:00",
      "url": "https://github.com/hannob/lololol"
    },
    "trigger_signal": {
      "at": "2026-10-22T19:14:06.001000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T19:14:06.001000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-115506"
    }
  }
}