CVE-2026-88829

{
  "etk_id": "ETK-2026-1916",
  "cve_id": "CVE-2026-88829",
  "display_id": "CVE-2026-88829",
  "ghsa_id": "GHSA-89f7-8rmh-f5q2",
  "euvd_id": "EUVD-2026-100952",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Path restriction bypass in BusyBox httpd reverse proxy",
  "summary": "BusyBox httpd reverse-proxy deployments that forward a URL prefix to a backend are affected. An unauthenticated remote attacker may reach backend paths outside the intended proxy prefix by abusing request handling on a reused connection. The issue requires the reverse proxy feature and prefix-based backend forwarding to be configured.",
  "mitigation": "Disable BusyBox httpd reverse-proxy forwarding or place a proxy that enforces per-request path validation in front of the backend. Restrict backend access so it accepts requests only from trusted proxy infrastructure.",
  "vendor": "Red Hat",
  "product": "Red Hat Hardened Images",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "busybox",
      "purl": null
    }
  ],
  "cwes": [
    444
  ],
  "cvss_score": 7.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
  "epss_score": 0.0032,
  "epss_percentile": 0.2332,
  "epss_asof": "2026-10-21",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 28.315459466666667,
  "t0_at": "2026-10-14T10:00:42.946000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-18T00:04:06.354889+00:00",
      "days": 3.5856876028819444,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T10:00:42.946000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-14T10:00:42.946000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T10:00:42.946000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-88829"
    }
  }
}