CVE-2026-107366

{
  "etk_id": "ETK-2026-2114",
  "cve_id": "CVE-2026-107366",
  "display_id": "CVE-2026-107366",
  "ghsa_id": "GHSA-qf42-fp6f-25w9",
  "euvd_id": "EUVD-2026-104676",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Improper message ownership checks in Langflow OSS",
  "summary": "Langflow OSS message endpoints do not verify that an authenticated user owns the targeted messages or conversation. An authenticated attacker could modify or delete another user’s messages or reassign a conversation session identifier, affecting conversation integrity and availability.",
  "mitigation": "Upgrade Langflow OSS to 1.9.0, 1.11.2, or 1.11.5, as appropriate for your release branch. Until upgraded, restrict access to trusted authenticated users and limit exposure of message-management endpoints.",
  "vendor": "IBM",
  "product": "Langflow OSS",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.0.0, <= 1.12.4"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "1.9.0",
        "1.11.2",
        "1.11.5"
      ],
      "package_name": "Langflow OSS",
      "purl": null
    }
  ],
  "cwes": [
    639
  ],
  "cvss_score": 8.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L",
  "epss_score": 0.0022,
  "epss_percentile": 0.1168,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 14.684806083333333,
  "t0_at": "2026-10-19T23:49:23.120000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-19T23:49:23.120000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T23:49:23.120000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-107366"
    }
  }
}