---
id: "CVE-2026-107327"
kind: "vulnerability"
aliases: ["CVE-2026-107327"]
title: "Langflow: authenticated users can run arbitrary code through missing authorization"
severity: "critical"
cvss: 9.9
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-apps", "ai-tooling", "langflow", "self-hosted"]
not_affected_if: ["versions-outside-range"]
published_at: "2026-10-29T16:17:50+00:00"
first_seen_at: "2026-10-29T16:25:55+00:00"
updated_at: "2026-10-29T16:27:11+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107327", "first_seen_at": "2026-10-29T16:25:55+00:00"}]
---

# Langflow: authenticated users can run arbitrary code through missing authorization

IBM Langflow OSS versions 1.0.0 through 1.12.4 lack an authorization check in one path. A logged-in attacker can use it to execute arbitrary code on the server.

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

## How to check

- Check the installed Langflow version, for example with `pip show langflow`, and compare it to the affected range `1.0.0` through `1.12.4`.

## Fix

- Move to a Langflow OSS release newer than `1.12.4`; the exact fixed version is unknown from the sources.

## Timeline

- 2026-10-29T16:25:55+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-107327

## From the sources

IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to execute arbitrary code due to missing authorization.

---

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