FKIE_CVE-2026-70483

Vulnerability from fkie_nvd - Published: 2026-08-04 20:16 - Updated: 2026-08-05 20:17
Severity
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, DELETE /api/v1/chats/{id} cancelled a chat's in-flight tasks before checking whether the caller could delete that chat. Any authenticated user who knew another user's chat id could abort that user's running model response, title generation, or tag generation, even though the delete was refused and no chat data was deleted, modified, or disclosed. This issue is fixed in 0.11.0.
References
security-advisories@github.comhttps://github.com/open-webui/open-webui/commit/4f93c3e36c1734342a32c312bdb0516c66d8e93c
security-advisories@github.comhttps://github.com/open-webui/open-webui/pull/27006
security-advisories@github.comhttps://github.com/open-webui/open-webui/releases/tag/v0.11.0
security-advisories@github.comhttps://github.com/open-webui/open-webui/security/advisories/GHSA-3vf6-64vr-3g56
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/open-webui/open-webui/security/advisories/GHSA-3vf6-64vr-3g56
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "open-webui",
          "vendor": "open-webui",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.9.6, \u003c 0.11.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, DELETE /api/v1/chats/{id} cancelled a chat\u0027s in-flight tasks before checking whether the caller could delete that chat. Any authenticated user who knew another user\u0027s chat id could abort that user\u0027s running model response, title generation, or tag generation, even though the delete was refused and no chat data was deleted, modified, or disclosed. This issue is fixed in 0.11.0."
    }
  ],
  "id": "CVE-2026-70483",
  "lastModified": "2026-08-05T20:17:16.897",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-70483",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-05T19:02:27.219746Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-04T20:16:55.333",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/open-webui/open-webui/commit/4f93c3e36c1734342a32c312bdb0516c66d8e93c"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/open-webui/open-webui/pull/27006"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/open-webui/open-webui/releases/tag/v0.11.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-3vf6-64vr-3g56"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-3vf6-64vr-3g56"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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