CVE-2026-120306

{
  "etk_id": "ETK-2026-3229",
  "cve_id": "CVE-2026-120306",
  "display_id": "CVE-2026-120306",
  "ghsa_id": "GHSA-xvhg-75x6-gj86",
  "euvd_id": "EUVD-2026-114840",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Build sandbox escape in beam-cloud Beta9 worker",
  "summary": "Beta9 worker versions before 0.1.756 can run tenant image-build commands without adequate process, network, and IPC isolation. A tenant able to submit an image build using a workspace token may access or modify resources in the build worker, including sensitive worker files and credentials.",
  "mitigation": "Upgrade github.com/beam-cloud/beta9 to version 0.1.756 or later. Until upgraded, restrict workspace tokens and prevent untrusted tenants from submitting image builds.",
  "vendor": "beam-cloud",
  "product": "Beta9 worker",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 0.1.756"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "0.1.756"
      ],
      "package_name": "github.com/beam-cloud/beta9",
      "purl": null
    }
  ],
  "cwes": [
    653
  ],
  "cvss_score": 9.9,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 34.3973373,
  "t0_at": "2026-11-01T12:49:05.857000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-01T12:49:05.857000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-01T12:49:05.857000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-120306"
    }
  }
}