CVE-2026-77214

{
  "etk_id": "ETK-2026-882",
  "cve_id": "CVE-2026-77214",
  "display_id": "CVE-2026-77214",
  "ghsa_id": "GHSA-8xfx-9m5m-pgcp",
  "euvd_id": "EUVD-2026-94368",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Heap buffer over-read in libexpat XML parsing",
  "summary": "libexpat revisions before commit 13c5f63 can read beyond an allocated parse buffer when applications use XML_ParseBuffer. An attacker may cause adjacent process memory to be exposed through the calling application when a parse buffer has already been established.",
  "mitigation": "Update libexpat to a revision containing commit 13c5f63 or later. Until then, avoid using XML_ParseBuffer with attacker-influenced lengths, and ensure supplied lengths cannot exceed the allocated parse buffer.",
  "vendor": "libexpat",
  "product": "libexpat",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 2.8.5"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "libexpat",
      "purl": null
    }
  ],
  "cwes": [
    125
  ],
  "cvss_score": 8.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N",
  "epss_score": 0.0055,
  "epss_percentile": 0.4488,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 16.918844633333332,
  "t0_at": "2026-10-07T14:35:42.794000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-07T14:35:42.794000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-07T14:35:42.794000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-77214"
    }
  }
}