---
id: "CVE-2026-110244"
kind: "vulnerability"
aliases: ["CVE-2026-110244"]
title: "Langflow: path traversal lets signed-in users read sensitive files"
severity: "high"
cvss: 8.8
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-tooling", "auth-required", "langflow", "python", "self-hosted"]
not_affected_if: ["langflow-1.12.5-or-later", "no-untrusted-logins", "unauthenticated-only-access", "versions-outside-range"]
published_at: "2026-10-29T16:17:56+00:00"
first_seen_at: "2026-10-29T16:25:56+00:00"
updated_at: "2026-10-29T16:30:42+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110244", "first_seen_at": "2026-10-29T16:25:56+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-29T16:30:42+00:00"}]
---

# Langflow: path traversal lets signed-in users read sensitive files

IBM Langflow OSS 1.0.0 through 1.12.4 does not keep file paths inside their intended directory. A logged-in attacker can use this to obtain sensitive information from the server.

_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 'langflow --version'; any version from 1.0.0 to 1.12.4 is affected, 1.12.5 or later is fixed. Anyone with a login on the instance can reach the flaw.

## Fix

Upgrade Langflow OSS to 1.12.5 (pip install -U 'langflow>=1.12.5'); back up the install and test flows first.

## Timeline

- 2026-10-29T16:25:56+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-110244
- 2026-10-29T16:30:42+00:00 analyst — IBM bulletin (node/7293016, 19 Oct 2026) lists this CVE, affected 1.0.0-1.12.4, fix 1.12.5. No feature gate or workaround stated for this CVE; the MCP stdio env settings in the bulletin are for other CVEs. IBM scores it 6.5 but gives a vector that computes to 8.8; severity left unchanged. No exploitation or PoC found; no X search done. Sibling path traversal CVE-2026-110190 is in the same bulletin.

## Documents

- [advisory] IBM Security Bulletin: Langflow OSS is affected by multiple vulnerabilities (19 Oct 2026) https://www.ibm.com/support/pages/node/7293016

## From the sources

IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to obtain sensitive information due to improper limitation of a pathname to a restricted directory.

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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_