---
id: "CVE-2026-0770"
kind: "vulnerability"
aliases: ["CVE-2026-0770"]
title: "Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability"
severity: "critical"
cvss: 9.8
epss: null
exploited: true
status: "open"
category: "ai-tooling"
products: [{"name": "Langflow Langflow", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "langflow", "fixed": [], "affected": "<= 1.7.3", "ecosystem": "pypi"}, {"name": "langflow", "fixed": [], "affected": "<= 1.7.3", "ecosystem": "vendor"}]
ecosystems: ["pypi", "vendor"]
tags: ["ai-agents", "ai-tooling", "exploited", "langflow", "poc-public", "rce", "self-hosted"]
not_affected_if: ["managed-hosting", "not-internet-exposed"]
published_at: "2026-01-23T04:16:04+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T23:44:51+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-0770", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-23T20:42:46+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0770", "first_seen_at": "2026-10-23T23:44:51+00:00"}]
---

# Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability

Langflow runs user-supplied Python with exec() in its code validation path (validate_code, exec_globals), which gives remote code execution, as root in some deployments. ZDI rates it CVSS 9.8 with no authentication needed. A public PoC exists and CISA lists it as exploited. Affected: all versions up to and including 1.7.3. No fixed version is named in the advisories I read.

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

## Affected

- vendor:Langflow Langflow affected ? fixed ?
- pypi:langflow affected <= 1.7.3 fixed ?
- vendor:langflow affected <= 1.7.3 fixed ?

## How to check

Run 'pip show langflow' or 'docker image inspect' to get the version; <= 1.7.3 is affected. Then check exposure: if the instance answers on /api/v1/validate/code, /api/v1/custom_component, /api/v1/webhook/{flow_id} or /api/v1/build_public_tmp/{flow_id}/flow from untrusted networks, it is exposed. The PoC README says the default AUTO_LOGIN=true bypasses authentication, so check LANGFLOW_AUTO_LOGIN. Look in logs for POST requests to those endpoints, and for child processes spawned by the Langflow service or unexpected outbound connections.

## Fix

No fixed version is confirmed. GitHub advisory lists patched versions as none. Cal-CSIC reports that Langflow release notes recommend upgrading to the latest version; 1.8.0 (github.com/langflow-ai/langflow/releases/tag/v1.8.0) is a later release, but I did not verify it fixes this CVE. Meanwhile: take the instance off the internet or allowlist management networks, put an authenticating reverse proxy in front, set LANGFLOW_AUTO_LOGIN=false, run as non-root, and rotate any API keys or secrets stored on exposed instances.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-0770
- 2026-10-23T20:42:46+00:00 analyst — ZDI-26-036 (0-day, unpatched at disclosure) and GHSA-g22f-v6f7-2hrh: unauthenticated RCE via exec() in Langflow validate code endpoint, affects <= 1.7.3; public PoC (affix); KEV-listed. No vendor-named fixed version found; GitHub advisory says patched: none, Cal-CSIC says upgrade to latest. 1.8.0 exists but I did not confirm it fixes this CVE.
- 2026-10-23T23:44:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-0770

## Documents

- [advisory] ZDI-26-036 Langflow exec_globals RCE (0-day advisory) https://www.zerodayinitiative.com/advisories/ZDI-26-036/
- [advisory] GHSA-g22f-v6f7-2hrh: Langflow validate_code() exec() RCE https://github.com/advisories/GHSA-g22f-v6f7-2hrh
- [mitigation] Cal-CSIC advisory CAL-CSIC-202607-A-012 https://www.caloes.ca.gov/wp-content/uploads/CSIC_Cyber_Advisory-Remote-Code-Execution-Vulnerability-Identifed-in-LangFlow.pdf
- [poc] affix CVE-2026-0770 PoC https://github.com/affix/CVE-2026-0770-PoC

## From the sources

Langflow contains an inclusion of functionality from untrusted control sphere vulnerability that allows remote attackers to execute arbitrary code on affected installations.

CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

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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_