---
id: "CVE-2026-109441"
kind: "vulnerability"
aliases: ["CVE-2026-109441"]
title: "LangAlpha: shared Docker bridge lets tenants reach each other's sandboxes"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-agents", "ai-tooling", "docker", "langalpha", "multi-tenant", "self-hosted"]
not_affected_if: ["isolated-sandbox-networks", "single-tenant"]
published_at: "2026-10-20T01:17:10+00:00"
first_seen_at: "2026-10-23T21:57:19+00:00"
updated_at: "2026-10-25T03:40:41+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109441", "first_seen_at": "2026-10-23T21:57:19+00:00"}]
---

# LangAlpha: shared Docker bridge lets tenants reach each other's sandboxes

LangAlpha places every tenant's sandbox container on Docker's shared default bridge network with inter-container communication enabled. An authenticated user who can run code in their own sandbox can connect to other tenants' containers and read their files, including vault secrets.

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

## How to check

- Check whether sandbox containers share the default `bridge` network, for example with `docker network inspect bridge` and looking for the sandbox containers.
- Confirm whether inter-container communication is enabled on that bridge (`com.docker.network.bridge.enable_icc` set to true or unset).
- unknown for any other LangAlpha-specific setting the sources do not name.

## Fix

- LangAlpha: unknown. The sources do not name a fixed version; the advisory covers all releases through `2026.09.07`.
- Until a fix is confirmed, isolate sandbox containers on per-tenant networks and disable inter-container communication on the shared bridge.
- Rotate any vault secrets that sandbox containers could have read.

## Timeline

- 2026-10-23T21:57:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-109441

## From the sources

LangAlpha through 2026.09.07 contains an improper isolation vulnerability that places all tenants' sandbox containers on Docker's shared default bridge network with inter-container communication enabled. Authenticated users with code execution in their own sandbox can connect directly to other tenants' containers, bypassing require_workspace_owner checks to read files such as vault secrets from exposed servers.

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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_