---
id: CVE-2026-81213
title: >-
  IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to obtain
  sensitive information from internal network resources due to improper
  validation of user-supplied URLs.
summary: >-
  IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to obtain
  sensitive information from internal network resources due to improper
  validation of user-supplied URLs.
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-918
vendor: langflow
product: langflow
affected:
  - 'langflow >= 1.0.0, < 1.11.6'
patched:
  - langflow 1.11.6
published: '2026-09-10'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T00:56:23.740'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81213'
references:
  - url: 'https://www.ibm.com/support/pages/node/7286665'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
epss: 0.00488
epssPercentile: 0.39443
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-11T18:48:10.116306Z'
ingestedAt: '2026-09-14T00:35:28.524Z'
---

## Overview

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to obtain sensitive information from internal network resources due to improper validation of user-supplied URLs.

## Affected

- `langflow >= 1.0.0, < 1.11.6`

## Remediation

Upgrade past the affected range:

- `langflow 1.11.6`