---
id: CVE-2026-109286
title: >-
  Open WebUI from 0.7.0 before 0.11.4 contains a cross-origin message handling
  vulnerability in SyncStatsModal that allows any website to steal a signed-in
  user's session token by posting unvalidated verify:chat messages
summary: >-
  Open WebUI from 0.7.0 before 0.11.4 contains a cross-origin message handling
  vulnerability in SyncStatsModal that allows any website to steal a signed-in
  user's session token by posting unvalidated verify:chat messages. Attackers
  can sup…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-346
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:21.613'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109286'
references:
  - url: >-
      https://github.com/open-webui/open-webui/security/advisories/GHSA-vpq8-f445-hcq7
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/open-webui-0.7.0-before-0.11.4-session-token-theft-via-syncstatsmodal
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.189Z'
---

## Overview

Open WebUI from 0.7.0 before 0.11.4 contains a cross-origin message handling vulnerability in SyncStatsModal that allows any website to steal a signed-in user's session token by posting unvalidated verify:chat messages. Attackers can supply a path-traversal chat id redirecting the authenticated stats export request to the auths endpoint, receiving the victim's JWT for full API access.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.