CVE-2026-104084

{
  "etk_id": "ETK-2026-1100",
  "cve_id": "CVE-2026-104084",
  "display_id": "CVE-2026-104084",
  "ghsa_id": "GHSA-3wv9-x54m-xfch",
  "euvd_id": "EUVD-2026-95890",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stale refresh-token privilege escalation in SmarterMail",
  "summary": "SmarterMail versions before build 9777 can continue honoring elevated role information stored in previously issued refresh tokens. An attacker with such a token may obtain an access token with the account's former administrative permissions after that account has been demoted. Exposure requires possession of a refresh token issued while the account still held the higher role.",
  "mitigation": "Upgrade SmarterMail to build 9777 or later. Until the upgrade is complete, invalidate existing refresh tokens and require reauthentication after administrative role changes where operationally possible.",
  "vendor": "Smartertools",
  "product": "Smartermail",
  "affected": [
    {
      "affected_notes": [
        ">= 0, < Build 9777"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [
        "Build 9777"
      ],
      "package_name": "Smartermail",
      "purl": null
    }
  ],
  "cwes": null,
  "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": 0.0027,
  "epss_percentile": 0.1862,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 39.8762619,
  "t0_at": "2026-10-09T15:08:23.453000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-09T21:48:23.846240+00:00",
      "days": 0.2777823291666667,
      "is_lower_bound": false,
      "measured_at": "2026-10-09T15:08:23.453000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-10-12T14:15:12+00:00",
      "days": 2.9630618865740743,
      "is_lower_bound": false,
      "measured_at": "2026-10-09T15:08:23.453000+00:00",
      "url": "https://github.com/eev4n/smartermail"
    },
    "trigger_signal": {
      "at": "2026-10-09T15:08:23.453000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-09T15:08:23.453000+00:00",
      "url": "https://github.com/advisories/GHSA-3wv9-x54m-xfch"
    }
  }
}