---
id: CVE-2026-105698
title: Langflow is a tool for building and deploying AI-powered agents and workflows
summary: >-
  Langflow is a tool for building and deploying AI-powered agents and workflows.
  From 1.0.0 until 1.10.1, Langflow did not verify flow ownership in the
  deprecated POST /api/v1/build/{flow_id}/vertices and POST
  /api/v1/build/{flow_id}/verti…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-639
  - CWE-862
vendor: langflow-ai
product: langflow
affected:
  - 'langflow >= 1.0.0, < 1.10.1'
  - langflow-base < 0.10.1
published: '2026-10-05'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T14:59:48.280'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105698'
references:
  - url: >-
      https://github.com/langflow-ai/langflow/commit/fb3d6ec90b1e4d52eaa40915a64b1f86b6542f55
    label: security-advisories@github.com
  - url: 'https://github.com/langflow-ai/langflow/pull/13153'
    label: security-advisories@github.com
  - url: 'https://github.com/langflow-ai/langflow/releases/tag/v1.10.1'
    label: security-advisories@github.com
  - url: >-
      https://github.com/langflow-ai/langflow/security/advisories/GHSA-gh98-4phw-6fmw
    label: security-advisories@github.com
  - url: >-
      https://github.com/langflow-ai/langflow/security/advisories/GHSA-gh98-4phw-6fmw
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105698'
  - url: 'https://github.com/advisories/GHSA-gh98-4phw-6fmw'
  - url: 'https://github.com/langflow-ai/langflow'
  - url: 'https://pypi.org/project/langflow'
  - url: 'https://pypi.org/project/langflow-base'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - pip
  - osv
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-06T13:58:15.330352Z'
ingestedAt: '2026-10-05T21:34:25.114Z'
aliases:
  - GHSA-gh98-4phw-6fmw
  - PYSEC-2026-4234
  - PYSEC-2026-4238
ecosystem: pip
patched:
  - langflow 1.10.1
  - langflow-base 0.10.1
epss: 0.00225
epssPercentile: 0.13152
---

## Overview

Langflow is a tool for building and deploying AI-powered agents and workflows. From 1.0.0 until 1.10.1, Langflow did not verify flow ownership in the deprecated POST /api/v1/build/{flow_id}/vertices and POST /api/v1/build/{flow_id}/vertices/{vertex_id} handlers. Through version 1.7.1, an unauthenticated caller who knew another user's flow UUID could reach these handlers; from version 1.7.2 through 1.10.0, callers had to authenticate but needed no elevated privileges. Such a caller could cause retrieve_vertices_order to load and cache the private graph, enumerate its vertex identifiers, and use build_vertex to execute selected vertices and receive their results. build_graph_from_db_no_cache performed a primary-key lookup without an owner filter. This could disclose private flow structure, configured values, and selected outputs and could trigger victim-configured side effects and build-history records, although it did not expose the victim's variable-store credentials or permit modification of the stored flow. This issue is fixed in Langflow 1.10.1 and langflow-base 0.10.1.

## Remediation

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

## Package advisory (CVE-2026-105698)

Affected packages:

- `langflow >= 1.0.0, < 1.10.1`
- `langflow-base < 0.10.1`

Patched in:

- `langflow 1.10.1`
- `langflow-base 0.10.1`

Source: https://github.com/advisories/GHSA-gh98-4phw-6fmw