---
title: "langflow — CVE-2026-8505"
description: "An authentication bypass flaw affects the PyPI package langflow. Affected versions: >= 1.7.0, <= 1.9.0. Fixed from version 1.9.1. CVSS score 9.8."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-10-05-cve-2026-8505
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-10-05
dateModified: 2026-10-05
---
# langflow — CVE-2026-8505

An authentication bypass flaw affects the PyPI package langflow. Affected versions: >= 1.7.0, <= 1.9.0. Fixed from version 1.9.1. CVSS score 9.8.

## What to do

Update langflow to 1.9.1 or later.

| Fact | Value |
| --- | --- |
| Package | langflow |
| Ecosystem | PyPI (Python) |
| Class | Authentication bypass |
| Affected versions | >= 1.7.0, <= 1.9.0 |
| Fixed version | 1.9.1 |
| CVSS | 9.8 |
| CVE | CVE-2026-8505 |
| GHSA | GHSA-cf6m-vc3m-7cgm |
| Published on | October 5, 2026 |
| Severity | Critical |

## Sources

- [GitHub Security Advisory — GHSA-cf6m-vc3m-7cgm](https://github.com/advisories/GHSA-cf6m-vc3m-7cgm) — GitHub Security Advisories
- [NVD — CVE-2026-8505](https://nvd.nist.gov/vuln/detail/CVE-2026-8505) — NVD

---

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