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CVE-2026-44571

Estado: AnalizadaMedia (6.5)—

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels (i.e., channels whose channel.type is neither group nor dm), the endpoint POST /api/v1/channels/{channel_id}/messages/{message_id}/update can be accessed with read permission only. When access_control is set to None, the authorization check has_access(..., type="read") evaluates to True, allowing users who are not the message owner to update messages. As a result, unauthorized modification of other users’ messages is possible. This vulnerability is fixed in 0.8.6.

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-2026-44571",
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  "metrics": {
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          "id": "CVE-2026-44571",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
            },
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              "automatable": "no"
            },
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          ],
          "version": "2.0.3",
          "timestamp": "2026-05-15T22:18:47.253332Z"
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
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        "exploitabilityScore": 2.8
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      "affectedData": [
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  "published": "2026-05-15T22:16:53.473",
  "references": [
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      "description": [
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    {
      "lang": "en",
      "value": "Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels (i.e., channels whose channel.type is neither group nor dm), the endpoint POST /api/v1/channels/{channel_id}/messages/{message_id}/update can be accessed with read permission only. When access_control is set to None, the authorization check has_access(..., type=\"read\") evaluates to True, allowing users who are not the message owner to update messages. As a result, unauthorized modification of other users’ messages is possible. This vulnerability is fixed in 0.8.6."
    }
  ],
  "lastModified": "2026-06-17T10:50:48.810",
  "configurations": [
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