CVEvulnerability

CVE-2026-87995

8.7 HIGH Published 2026-09-09 Modified 2026-09-16 Official page ↗
Status
Analyzed
Published
2026-09-09
Last modified
2026-09-16
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weaknesses
CWE-1021, CWE-79

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.11 until 0.11.1, src/lib/components/chat/FileNav/PortPreview.svelte rendered terminal port content in an iframe sandbox containing both allow-scripts and allow-same-origin. Because the terminal proxy serves that content from the Open WebUI origin, an authenticated user with access to a shared terminal server could host script on a previewed port and take over a victim's account when the victim opened the preview. This issue is fixed in version 0.11.1.

Affected configurations

• openwebui open webui (>= 0.8.11 < 0.11.1)

Related

Weakness · CWE (2)

  • CWE-1021 Improper Restriction of Rendered UI Layers or Frames weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References