ETK-2026-2690Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-2690",
  "cve_id": null,
  "display_id": "ETK-2026-2690",
  "ghsa_id": "GHSA-48p4-gj45-w9v6",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "CPU exhaustion in libheif HEIF decoding",
  "summary": "libheif versions before 1.23.7 can consume excessive CPU while decoding crafted HEIF images that repeatedly trigger decoding of large image content. An attacker needs to supply a malicious HEIF file to an application or service that decodes untrusted HEIF input, potentially delaying or exhausting available CPU resources.",
  "mitigation": "Upgrade libheif to version 1.23.7 or later. Until upgrades are complete, restrict or isolate processing of untrusted HEIF files and apply resource limits to decoding workloads.",
  "vendor": "other",
  "product": "libheif",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.0.0, < 1.23.7"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "1.23.7"
      ],
      "package_name": "libheif",
      "purl": null
    }
  ],
  "cwes": [
    400
  ],
  "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": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 28.059442,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-10-26T11:51:11+00:00",
      "days": -0.5799848277546297,
      "is_lower_bound": true,
      "measured_at": "2026-10-27T01:46:21.717635+00:00",
      "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-48p4-gj45-w9v6"
    }
  }
}