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CVE-2026-45666

Estado: AnalizadaMedia (6.5)—

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.11, the API /api/v1/notes/{note_id} endpoint lacks proper authorization checks, allowing authenticated users to retrieve notes belonging to other users by guessing or enumerating UUIDs. This results in unauthorized disclosure of potentially sensitive or private user data. This vulnerability is fixed in 0.8.11.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Openwebui — Open Webui

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-45666",
  "cveTags": [],
  "metrics": {
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          "id": "CVE-2026-45666",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
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            },
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            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-18T16:14:44.070898Z"
        }
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
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        "exploitabilityScore": 2.8
      }
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  "affected": [
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      "source": "security-advisories@github.com",
      "affectedData": [
        {
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  ],
  "published": "2026-05-15T22:16:56.057",
  "references": [
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      "description": [
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      "value": "Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.11, the API /api/v1/notes/{note_id} endpoint lacks proper authorization checks, allowing authenticated users to retrieve notes belonging to other users by guessing or enumerating UUIDs. This results in unauthorized disclosure of potentially sensitive or private user data. This vulnerability is fixed in 0.8.11."
    }
  ],
  "lastModified": "2026-06-17T10:52:26.420",
  "configurations": [
    {
      "nodes": [
        {
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