CVE-2026-102478

{
  "etk_id": "ETK-2026-834",
  "cve_id": "CVE-2026-102478",
  "display_id": "CVE-2026-102478",
  "ghsa_id": "GHSA-r946-p43h-mw8h",
  "euvd_id": "EUVD-2026-94154",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Improper role validation in Octopus Server",
  "summary": "Affected Octopus Server versions improperly validate certain role-modification inputs. An authenticated user with permission to modify roles could weaken a built-in role and add their own account to a privileged team, escalating privileges.",
  "mitigation": "Upgrade Octopus Server to 2026.1.11768, 2026.2.13408, or 2026.3.15816, as appropriate for your release line. Until upgraded, restrict role-modification permission to tightly trusted administrators.",
  "vendor": "Octopus Deploy",
  "product": "Octopus Server",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2023.2.945, < 2026.1.11768",
        ">= 2026.2.0, < 2026.2.13408",
        ">= 2026.3.0, < 2026.3.15816"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "2026.1.11768",
        "2026.2.13408",
        "2026.3.15816"
      ],
      "package_name": "Octopus Server",
      "purl": null
    }
  ],
  "cwes": [
    1289
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.003,
  "epss_percentile": 0.2089,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 53.48780433333334,
  "t0_at": "2026-10-07T01:17:54.724000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-07T03:00:29.193717+00:00",
      "days": 0.0712322883912037,
      "is_lower_bound": false,
      "measured_at": "2026-10-07T01:17:54.724000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-07T01:17:54.724000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-07T01:17:54.724000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-102478"
    }
  }
}