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Untriaged
Permalink CVE-2026-26192
7.3 HIGH
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): LOW
  • User interaction (UI): REQUIRED
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): HIGH
  • Integrity impact (I): HIGH
  • Availability impact (A): NONE
created 1 month, 4 weeks ago
Open WebUI vulnerable to Stored XSS via iFrame in citations model

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.7.0, aanually modifying chat history allows setting the `html` property within document metadata. This causes the frontend to enter a code path that treats document contents as HTML, and render them in an iFrame when the citation is previewed. This allows stored XSS via a weaponized document payload in a chat. The payload also executes when the citation is viewed on a shared chat. Version 0.7.0 fixes the issue.

Affected products

open-webui
  • ==< 0.7.0

Matching in nixpkgs

pkgs.open-webui

Comprehensive suite for LLMs with a user-friendly WebUI

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