CVE-2026-124959

{
  "etk_id": "ETK-2026-3967",
  "cve_id": "CVE-2026-124959",
  "display_id": "CVE-2026-124959",
  "ghsa_id": "GHSA-pvwj-4565-gq34",
  "euvd_id": "EUVD-2026-120081",
  "status": "published",
  "anchor_state": "anchored",
  "title": "HNSW index loader buffer overflow in Spotify Voyager",
  "summary": "Spotify Voyager and hnswlib can write beyond a heap buffer while loading a serialized HNSW index with inconsistent size metadata. An attacker may cause an application crash if they can make it load a crafted index file.",
  "mitigation": "Do not load HNSW index files from untrusted sources, and restrict who can replace or upload index files. Validate index provenance before deployment and monitor the affected projects for a corrected release.",
  "vendor": "Spotify",
  "product": "Voyager",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.0.7, <= 2.1.1"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Voyager",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0.5.0, <= 0.9.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "hnswlib",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": null,
  "cvss_src": null,
  "cvss_vector": null,
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 18.166129416666667,
  "t0_at": "2026-11-09T15:04:38.649000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-09T15:44:07.696444+00:00",
      "days": 0.02741953060185185,
      "is_lower_bound": false,
      "measured_at": "2026-11-09T15:04:38.649000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-09T15:04:38.649000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-09T15:04:38.649000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-124959"
    }
  }
}