---
title: "CVE-2026-87995: Open WebUI - Stored XSS"
description: "Open WebUI 0.8.11 to 0.11.1 contains a stored XSS caused by rendering terminal port content in an iframe sandbox with allow-scripts and allow-same-origin, letting authenticated users with shared terminal access execute scripts and take over victim accounts, exploit requires victim to open the preview."
url: https://panop.io/threat-heartbeat/CVE-2026-87995/
---

# CVE-2026-87995 Open WebUI - Stored XSS

Open WebUI 0.8.11 to 0.11.1 contains a stored XSS caused by rendering terminal port content in an iframe sandbox with allow-scripts and allow-same-origin, letting authenticated users with shared terminal access execute scripts and take over victim accounts, exploit requires victim to open the preview.

CVSS base score 8.7 /10

High

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Required

EPSS

0.42% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-87995)

## Details

Type

Stored XSS

Impact

Stored XSS

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Published

9 September 2026

Updated

15 October 2026

Weakness

[CWE-79](https://cwe.mitre.org/data/definitions/79.html)

## Vendor fix

Update to version 0.11.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-87995](https://nvd.nist.gov/vuln/detail/CVE-2026-87995)
- [https://github.com/open-webui/open-webui/security/advisories/GHSA-jmc6-2wr8-h3wj](https://github.com/open-webui/open-webui/security/advisories/GHSA-jmc6-2wr8-h3wj)
- [https://github.com/open-webui/open-webui/commit/54d7a223707f03172efbb9e754db6e69709956d0](https://github.com/open-webui/open-webui/commit/54d7a223707f03172efbb9e754db6e69709956d0)
- [https://github.com/open-webui/open-webui/releases/tag/v0.11.1](https://github.com/open-webui/open-webui/releases/tag/v0.11.1)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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