CVE-2026-109427

{
  "etk_id": "ETK-2026-1417",
  "cve_id": "CVE-2026-109427",
  "display_id": "CVE-2026-109427",
  "ghsa_id": "GHSA-q45w-888c-vpfr",
  "euvd_id": "EUVD-2026-97859",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authorization bypass in Telegram-Stremio chat endpoints",
  "summary": "Telegram-Stremio through 5.1.0 has authorization flaws affecting its message-streaming and thumbnail endpoints. An attacker with a valid token may access messages from other chats, while an unauthenticated requester may be able to obtain related thumbnails; exposure depends on the affected endpoints being reachable.",
  "mitigation": "Restrict or disable external access to the message-streaming and thumbnail endpoints, allowing only trusted users and networks. Monitor vendor releases for a corrected version; no fixed version is recorded in the advisory.",
  "vendor": "weebzone",
  "product": "Telegram-Stremio",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 5.1.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Telegram-Stremio",
      "purl": null
    }
  ],
  "cwes": [
    639
  ],
  "cvss_score": 7.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
  "epss_score": 0.0021,
  "epss_percentile": 0.1037,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 41.82404343333334,
  "t0_at": "2026-10-12T20:35:49.858000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-12T20:35:49.858000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-12T20:35:49.858000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-109427"
    }
  }
}