High severity8.7NVD Advisory· Published Sep 9, 2026· Updated Sep 16, 2026
CVE-2026-87995
CVE-2026-87995
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
open-webuiPyPI | >= 0.8.11, < 0.11.1 | 0.11.1 |
Affected products
3(expand)+ 2 more
- (no CPE)
- cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*range: >=0.8.11,<0.11.1
- (no CPE)range: <0.11.1
Patches
Vulnerability mechanics
References
5- github.com/open-webui/open-webui/commit/54d7a223707f03172efbb9e754db6e69709956d0nvdPatchWEB
- github.com/open-webui/open-webui/security/advisories/GHSA-jmc6-2wr8-h3wjnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-jmc6-2wr8-h3wjghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-87995ghsaADVISORY
- github.com/open-webui/open-webui/releases/tag/v0.11.1nvdRelease NotesWEB
News mentions
1- Open WebUI: 18 Vulnerabilities Disclosed, Patch Released in Version 0.11.1Vypr Intelligence · Sep 10, 2026