---
id: CVE-2026-9225
title: >-
  IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an authenticated
  attacker to access sensitive files belonging to other users due to improper
  access control in the File/Read File component
summary: >-
  IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an authenticated
  attacker to access sensitive files belonging to other users due to improper
  access control in the File/Read File component. When executing flows through
  the /api…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-639
vendor: langflow
product: langflow
affected:
  - 'langflow >= 1.0.0, < 1.11.6'
patched:
  - langflow 1.11.6
published: '2026-09-10'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T17:09:46.380'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-9225'
references:
  - url: 'https://www.ibm.com/support/pages/node/7286657'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
epss: 0.00218
epssPercentile: 0.12465
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-11T14:50:30.443566Z'
ingestedAt: '2026-09-11T16:45:47.856Z'
---

## Overview

IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an authenticated attacker to access sensitive files belonging to other users due to improper access control in the File/Read File component. When executing flows through the /api/v1/run/advanced/{flow_id} endpoint, the application allows component inputs to reference storage paths using arbitrary user or flow identifiers without verifying ownership. An attacker with low‑privileged authenticated access can supply a crafted file path pointing to another user’s storage namespace, causing the backend to read and return the contents of files uploaded by other users. This vulnerability bypasses intended authorization checks enforced by the file management API and may result in unauthorized disclosure of sensitive user data.

## Affected

- `langflow >= 1.0.0, < 1.11.6`

## Remediation

Upgrade past the affected range:

- `langflow 1.11.6`