---
id: CVE-2026-10700
title: >-
  IBM Langflow OSS 1.0.0 through 1.8.4 contains multiple broken access control
  vulnerabilities in its file handling API that allow unauthorized access to
  user files.The /api/v1/files/images/{flow_id}/{file_name} endpoint does not
  enforce a…
summary: >-
  IBM Langflow OSS 1.0.0 through 1.8.4 contains multiple broken access control
  vulnerabilities in its file handling API that allow unauthorized access to
  user files.The /api/v1/files/images/{flow_id}/{file_name} endpoint does not
  enforce a…
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
published: '2026-07-30'
updated: '2026-07-31'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-10700'
references:
  - url: 'https://www.ibm.com/support/pages/node/7279675'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.0054
epssPercentile: 0.42984
ingestedAt: '2026-08-01T22:15:46.199Z'
---

## Overview

IBM Langflow OSS 1.0.0 through 1.8.4 contains multiple broken access control vulnerabilities in its file handling API that allow unauthorized access to user files.The /api/v1/files/images/{flow_id}/{file_name} endpoint does not enforce authentication or authorization checks, allowing unauthenticated remote attackers to retrieve image files associated with any flow by specifying a valid flow_id and file_name.Additionally, the /api/v1/files/download/{flow_id}/{file_name} endpoint requires authentication but fails to properly validate ownership of the requested resource. As a result, an authenticated user can access files belonging to other users by supplying arbitrary identifiers, leading to an authorization bypass (IDOR).Successful exploitation may result in unauthorized disclosure of sensitive data, including files stored in private flows. This issue breaks tenant isolation in multi-user deployments.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.