---
id: "CVE-2026-104315"
kind: "vulnerability"
aliases: ["CVE-2026-104315"]
title: "Langflow: authenticated users can make the server send requests internally"
severity: "medium"
cvss: 4.3
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-agents", "ai-tooling", "langflow", "self-hosted"]
not_affected_if: ["unauthenticated-only-access", "version-outside-range"]
published_at: "2026-10-29T16:17:43+00:00"
first_seen_at: "2026-10-29T16:25:54+00:00"
updated_at: "2026-10-29T16:32:02+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104315", "first_seen_at": "2026-10-29T16:25:54+00:00"}]
---

# Langflow: authenticated users can make the server send requests internally

IBM Langflow OSS versions 1.0.0 through 1.12.3 have a server-side request forgery flaw. A logged-in attacker can make the server send requests to other systems, which can expose internal network details or help with further attacks.

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

## How to check

- Check the installed Langflow version with `langflow --version` or the package manager, and compare it with the affected range 1.0.0 through 1.12.3.

## Fix

- Move to a Langflow version later than `1.12.3`; the exact fixed version is unknown from the sources.

## Timeline

- 2026-10-29T16:25:54+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-104315

## From the sources

IBM Langflow OSS 1.0.0 through 1.12.3 is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.

---

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