FKIE_CVE-2026-44549

Vulnerability from fkie_nvd - Published: 2026-05-15 22:16 - Updated: 2026-05-19 16:38
Severity
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
8.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Summary
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheet_to_html to embed an XSS payload into the generated HTML. This is subsequently added to the DOM unsanitized via @html causing the payload to trigger. This vulnerability is fixed in 0.8.0.
References
security-advisories@github.comhttps://github.com/open-webui/open-webui/security/advisories/GHSA-jwf8-pv5p-vhmcExploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/open-webui/open-webui/security/advisories/GHSA-jwf8-pv5p-vhmcExploit, Vendor Advisory
Impacted products
Vendor Product Version
openwebui open_webui *
To clipboard 

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              "matchCriteriaId": "D1CB836C-E6D5-4BFB-845D-004EC3CEAA31",
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      "value": "Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheet_to_html to embed an XSS payload into the generated HTML. This is subsequently added to the DOM unsanitized via @html causing the payload to trigger. This vulnerability is fixed in 0.8.0."
    }
  ],
  "id": "CVE-2026-44549",
  "lastModified": "2026-05-19T16:38:53.350",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
          "version": "3.1"
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        "type": "Secondary"
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  "references": [
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "CWE-79"
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      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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