---
id: CVE-2026-8447
title: >-
  IBM Langflow OSS 1.0.0 through 1.11.2 suffer from a stored cross-site
  scripting vulnerability in the Playground chat interface.
summary: >-
  IBM Langflow OSS 1.0.0 through 1.11.2 suffer from a stored cross-site
  scripting vulnerability in the Playground chat interface.
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: langflow
product: langflow
affected:
  - 'langflow >= 1.0.0, < 1.11.3'
patched:
  - langflow 1.11.3
published: '2026-09-04'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T21:49:51.913'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-8447'
references:
  - url: 'https://www.ibm.com/support/pages/node/7285646'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.00214
epssPercentile: 0.12105
ingestedAt: '2026-09-08T15:33:26.961Z'
---

## Overview

IBM Langflow OSS 1.0.0 through 1.11.2 suffer from a stored cross-site scripting vulnerability in the Playground chat interface.

## Affected

- `langflow >= 1.0.0, < 1.11.3`

## Remediation

Upgrade past the affected range:

- `langflow 1.11.3`