CVE-2026-109290

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Source
https://cve.org/CVERecord?id=CVE-2026-109290
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109290.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-109290
Aliases
  • GHSA-f9xp-mfmq-x6cg
Published
2026-10-12T16:04:51Z
Modified
2026-10-13T02:45:47Z
Severity
  • 8.4 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Open WebUI 0.11.1 before 0.11.4 Stored XSS via DOCX Preview
Details

Open WebUI from 0.11.1 before 0.11.4 contains a stored cross-site scripting vulnerability in DocxPreview.svelte that allows authenticated users to execute script by uploading crafted DOCX attachments. Attackers can embed an OOXML altChunk HTML part or script-scheme hyperlink to steal a previewing administrator's session token from local storage and take over the instance.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109290.json"
}
References

Affected packages

Git / github.com/open-webui/open-webui

Affected ranges

Type
GIT
Repo
https://github.com/open-webui/open-webui
Events
Introduced
d3e8bf3405e848cfba377814d0aa7ba7290e414d
Fixed
8bd8b4fac5e059578ac0c74b3c18d11139f88b7d
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0.11.1"
        },
        {
            "fixed":  "0.11.4"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v0.*
v0.11.1
v0.11.2
v0.11.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109290.json"