---
id: "CVE-2026-110245"
kind: "vulnerability"
aliases: ["CVE-2026-110245"]
title: "Langflow: improper authentication lets remote attackers obtain sensitive information"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: [{"name": "langflow", "fixed": ["1.12.5"], "affected": ">= 1.0.0, <= 1.12.4", "ecosystem": "pypi"}]
ecosystems: []
tags: ["ai-apps", "ai-tooling", "langflow", "self-hosted"]
not_affected_if: ["version-outside-range"]
published_at: "2026-10-29T16:17:56+00:00"
first_seen_at: "2026-10-29T16:25:56+00:00"
updated_at: "2026-10-29T16:30:38+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110245", "first_seen_at": "2026-10-29T16:25:56+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-29T16:30:38+00:00"}]
---

# Langflow: improper authentication lets remote attackers obtain sensitive information

IBM Langflow OSS versions 1.0.0 through 1.12.4 fail to properly check authentication. A remote attacker can obtain sensitive information from an affected instance.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- pypi:langflow affected >= 1.0.0, <= 1.12.4 fixed 1.12.5

## How to check

Run pip show langflow (or check the version in the UI). Versions 1.0.0 through 1.12.4 are affected; 1.12.5 or later is fixed. Unauthenticated, so any instance reachable over the network is exposed.

## Fix

Upgrade Langflow OSS to 1.12.5 or later (IBM bulletin 7293016). Back up first and follow IBM's upgrade instructions.

## Timeline

- 2026-10-29T16:25:56+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-110245
- 2026-10-29T16:30:38+00:00 analyst — IBM bulletin 7293016 (Oct 19) lists it: CWE-287, CVSS 7.5 PR:N, confidentiality only, affected 1.0.0-1.12.4, fix 1.12.5. IBM names no endpoint or data exposed; no workaround for this CVE (MCP stdio settings relate to other CVEs). No exploitation or PoC found; social search skipped.

## Documents

- [advisory] IBM Security Bulletin: Langflow OSS is affected by multiple vulnerabilities (19 Oct 2026) https://www.ibm.com/support/pages/node/7293016
- [mentions] VibeIncidents: IBM discloses 14 Langflow CVEs https://vibeincidents.com/incidents/langflow-ibm-bulletin-14-cves-2026-10/

## From the sources

IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote attacker to obtain sensitive information due to improper authentication.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_