CVE-2026-103484

{
  "etk_id": "ETK-2026-275",
  "cve_id": "CVE-2026-103484",
  "display_id": "CVE-2026-103484",
  "ghsa_id": "GHSA-pw7q-9788-x566",
  "euvd_id": "EUVD-2026-91044",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Out-of-bounds write in pgvector IVFFlat index builds",
  "summary": "pgvector versions before 0.8.7 are affected when building IVFFlat indexes. A database user may be able to cause an out-of-bounds write that can lead to arbitrary code execution. Exploitation requires database-user access and an affected index build operation.",
  "mitigation": "Upgrade pgvector to version 0.8.7 or later. Until upgraded, restrict untrusted database users from creating or rebuilding IVFFlat indexes.",
  "vendor": null,
  "product": "pgvector",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 0.8.7"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "0.8.7"
      ],
      "package_name": "pgvector",
      "purl": null
    }
  ],
  "cwes": [
    787
  ],
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0042,
  "epss_percentile": 0.352,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 61.01522345,
  "t0_at": "2026-10-01T19:49:03.670000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-01T21:41:04.760528+00:00",
      "days": 0.07779039962962964,
      "is_lower_bound": false,
      "measured_at": "2026-10-01T19:49:03.670000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-01T19:49:03.670000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-01T19:49:03.670000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-103484"
    }
  }
}