CVE-2026-116835

{
  "etk_id": "ETK-2026-4277",
  "cve_id": "CVE-2026-116835",
  "display_id": "CVE-2026-116835",
  "ghsa_id": "GHSA-x27r-mfxr-pcpj",
  "euvd_id": "EUVD-2026-124401",
  "status": "published",
  "anchor_state": "anchored",
  "title": "OIDC custom-claim validation flaw in Octopus Server",
  "summary": "Affected Octopus Server versions inadequately validate custom claims on OIDC accounts. A user permitted to edit accounts may obtain signed OIDC tokens that represent a different project, potentially gaining access to external services that trust that project identity.",
  "mitigation": "Upgrade Octopus Server to 2026.2.13503 or 2026.3.15894, as appropriate for your release stream. Until upgraded, limit account-editing permissions to trusted administrators.",
  "vendor": "Octopus Deploy",
  "product": "Octopus Server",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2025.3.11571, < 2026.2.13503",
        ">= 2026.3.0, < 2026.3.15894"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "2026.2.13503",
        "2026.3.15894"
      ],
      "package_name": "Octopus Server",
      "purl": null
    }
  ],
  "cwes": [
    915
  ],
  "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 84.46578098333333,
  "t0_at": "2026-11-12T13:23:53.793000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-12T14:58:01.642422+00:00",
      "days": 0.06536862756944445,
      "is_lower_bound": false,
      "measured_at": "2026-11-12T13:23:53.793000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-12T13:23:53.793000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-12T13:23:53.793000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-116835"
    }
  }
}