---
id: "CVE-2026-110190"
kind: "vulnerability"
aliases: ["CVE-2026-110190"]
title: "Langflow: authenticated users can read arbitrary files via directory traversal"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: [{"name": "Langflow OSS", "fixed": ["1.12.5"], "affected": ">= 1.0.0, <= 1.12.4", "ecosystem": "pypi"}]
ecosystems: []
tags: ["ai-apps", "ai-tooling", "auth-required", "langflow", "self-hosted"]
not_affected_if: ["managed-hosting", "version-outside-range"]
published_at: "2026-10-29T16:17:55+00:00"
first_seen_at: "2026-10-29T16:25:56+00:00"
updated_at: "2026-10-29T16:32:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110190", "first_seen_at": "2026-10-29T16:25:56+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-29T16:32:52+00:00"}]
---

# Langflow: authenticated users can read arbitrary files via directory traversal

IBM Langflow OSS versions 1.0.0 through 1.12.4 let a logged-in user traverse directories through a crafted URL request. An attacker can use this to view arbitrary files on the server.

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

## Affected

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

## How to check

Run 'pip show langflow' or 'langflow --version'. Versions 1.0.0 through 1.12.4 are affected; 1.12.5 is fixed.

## Fix

Upgrade Langflow OSS to 1.12.5 (IBM). Back up the installation and test flows after upgrading.

## Timeline

- 2026-10-29T16:25:56+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-110190
- 2026-10-29T16:32:52+00:00 analyst — IBM bulletin (19 Oct 2026, bundle of many Langflow CVEs) lists CVE-2026-110190 as CWE-22, 1.0.0-1.12.4, fix 1.12.5. No endpoint named, no exploitation or PoC found, no mitigation specific to this CVE (listed workarounds are for MCP stdio). Social search skipped.

## Documents

- [advisory] IBM Security Bulletin: Langflow OSS is affected by multiple vulnerabilities (1.12.5) https://www.ibm.com/support/pages/security-bulletin-langflow-oss-affected-multiple-vulnerabilities-1

## From the sources

IBM Langflow OSS 1.0.0 through 1.12.4 could allow an authenticated user to traverse directories on the system. An attacker could send a specially crafted URL request to view arbitrary files on the system.

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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_